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00:00:00Sous-titrage Société Radio-Canada
00:00:30It is a lot of pressure.
00:00:34You don't want to let down Voyager.
00:01:00Sous-titrage Société Radio-Canada
00:01:29I mean, we do not know, we don't know everything.
00:01:35If we can talk a little bit later, people here are coming into my office and want to know
00:01:41what's going on, what's happening.
00:01:43Have we been able to recover?
00:01:44Hey, welcome to Voyager.
00:02:04I'm going to put loose lights on.
00:02:14Okay.
00:02:15I'm going to get the blinds open.
00:02:18We have our library.
00:02:20I'm not sure what this is on the floor over here.
00:02:23This is our kitchen area, offices for the engineers, and of course, this is Susie's office here.
00:02:33Susie, take one.
00:02:36My name is Suzanne Dodd, and I'm the Voyager project manager here at the Jet Propulsion Laboratory.
00:02:40I think being here, you're forgotten here.
00:02:48Where we are now is in a complex called Woodbury, which is the name of the street it's on.
00:03:01It's about a mile from JPL, I think, next to McDonald's.
00:03:10NASA management doesn't really think of Voyager, doesn't really worry about Voyager.
00:03:14It's out of sight, out of mind, kind of thing.
00:03:18That wasn't always the case.
00:03:22The mission of Voyager is the search for knowledge that will widen the horizons of generations to come.
00:03:33The whole community, the science community, the political community,
00:03:36were really hot to do this mission.
00:03:39To help you feel the staggering dimensions of this mission,
00:03:42it's worth recalling how it got here.
00:03:45In the late 60s,
00:03:47we learned it was possible
00:03:48to use the gravity of one planet
00:03:51to accelerate the spacecraft
00:03:53and go to another planet.
00:03:56Then somebody found out
00:03:57that there's a very unusual
00:03:59alignment in 77.
00:04:02All four of the giant
00:04:04outer planets, Jupiter, Saturn,
00:04:06Uranus, and Neptune,
00:04:07would be aligned on the same side of the sun.
00:04:10It only occurs once every 176 years,
00:04:15or you can go from Jupiter to Saturn to Uranus to Neptune.
00:04:19The last time that happened was during Thomas Jefferson's administration.
00:04:25In 77, it happens again,
00:04:28when the space age itself is only 20 years old.
00:04:32As soon as people realize that,
00:04:34I think, we've got to send a mission to do that.
00:04:35The Voyager spacecraft
00:04:37will carry the eyes of man
00:04:39farther than they've ever been
00:04:40and closer to the very limits of our solar system.
00:04:51They said, okay,
00:04:52what we're going to do
00:04:52is we're going to have two spacecraft
00:04:54for redundancies.
00:04:56Cape Canaveral, Florida,
00:04:58sent another unmanned Voyager spacecraft
00:05:00on its way to Jupiter and Saturn.
00:05:02That gave us better assurance
00:05:05that at least one
00:05:06could finish what's called
00:05:07the grand tour
00:05:08of the giant outer planets.
00:05:11What we know about
00:05:12Jupiter
00:05:13and Saturn,
00:05:16Uranus,
00:05:17and Neptune
00:05:18were all achieved
00:05:20by a single mission
00:05:21flying breakneck speed
00:05:23through the solar system.
00:05:25Not since 1969
00:05:28and man's first footsteps
00:05:30on the moon
00:05:30has space captured
00:05:32the nation's imagination
00:05:33to this degree.
00:05:35We are in the process
00:05:36of having completed
00:05:37the reconnaissance
00:05:38of the solar system.
00:05:40It's a fantastic
00:05:41historical achievement.
00:05:44The scientists and friends
00:05:45are here to celebrate
00:05:46the completion
00:05:47of Voyager's grand tour.
00:05:49There's a strong feeling
00:05:50of elation here
00:05:51as many continue
00:05:52to ride the crest
00:05:53of a wave
00:05:54that carried the mission
00:05:55to a monumental success.
00:06:00And after that,
00:06:02pretty much everybody
00:06:03thought Voyager was over.
00:06:05I think we probably had
00:06:06about 1,200 engineers
00:06:07working on it.
00:06:08I, I, I, you know,
00:06:10I don't even know
00:06:12how many people
00:06:13are working on Voyager
00:06:14right now.
00:06:15Probably not more
00:06:15than 10 or 15.
00:06:17Today, we have 12 people
00:06:18that fly to spacecraft.
00:06:20They've dedicated
00:06:21their whole career
00:06:22to Voyager.
00:06:36It's not that we fly
00:06:38by Neptune
00:06:38and everything's done.
00:06:40Voyager has long legs.
00:06:42As far as continuation
00:06:43of the mission,
00:06:44we do plan
00:06:45to continue tracking Voyager
00:06:46for as long as it's possible.
00:06:48We move into
00:06:50the interstellar mission,
00:06:52which will be staffed
00:06:53by a much lower
00:06:53staffing level.
00:06:55This is the next step
00:06:58of exploration
00:06:59for mankind.
00:07:02The first interstellar space.
00:07:04We made it!
00:07:04Hello?
00:07:25Hello?
00:07:25Hello?
00:07:25Hello?
00:07:27Hello?
00:07:33Hello?
00:07:55Hey, this is Susie. I'm on the line.
00:07:59Hey, Susie. We're about to walk in, so stand by.
00:08:03Okay.
00:08:05My first job out of college was on Voyager.
00:08:09Entry-level position.
00:08:11It was doing what we call sequencing.
00:08:15The small team that I was on was small,
00:08:19relatively small. It was 30 people.
00:08:23And I did that for the Uranus encounter and then also the Neptune encounter.
00:08:27Since then, I've done several positions.
00:08:29I was working on Spitzer and Cassini,
00:08:33raising kids, lots of stuff going on,
00:08:35so I wasn't paying much attention to Voyager until they called me and said,
00:08:39would you like to be the Voyager project manager?
00:08:41I said, sure, is it still going?
00:08:50I was surprised when I came back as a project manager.
00:08:52project manager in 2010.
00:08:54How many people were still on Voyager?
00:08:56It's like I had never, 20 years had never gone by.
00:09:00When you joined Voyager, what year was that?
00:09:0473.
00:09:06I was a spacecraft team chief.
00:09:10Through mid-'81, much later in my career, they called me back.
00:09:16The experience is different from day to day, but it's still the same goal.
00:09:22There's a mission to be flown.
00:09:24We need to put the instruments through their paces.
00:09:28We need to make observations.
00:09:30We need to look for things where we're not sure what we're going to find,
00:09:34just to get the science back.
00:09:36And that's really the role of these teams.
00:09:40Our focus is to make sure that we get the scientists the data that they want.
00:09:50No spacecraft has ever been out this far.
00:09:52Astrophysicists, they're tickled to death that both Voyagers have survived and are taking data in interstellar space.
00:10:16There's a chance to see something new or learn something that hasn't been learned or observed before.
00:10:26My best day is when we have a staff meeting and Ed Stone is there.
00:10:32And he's talking about what they're seeing.
00:10:40We're talking with Dr. Edward Stone, Voyager project scientist.
00:10:43Dr. Edward Stone is a professor of physics at Caltech.
00:10:47Doctor, what are the responsibilities, your responsibilities here at JPL?
00:10:52I'm Ed Stone.
00:10:53I'm the chief scientist for the mission called the project scientist for Voyager.
00:10:58Dr. Ed Stone.
00:10:59Ed Stone, the Voyager project scientist, has joined us again.
00:11:02The Voyager project scientist, Dr. Ed Stone.
00:11:06The one and the only project scientist that Voyager has ever known.
00:11:12The one and only.
00:11:13The Voyager was really a pathfinder.
00:11:18The fact that it lasted 42 years and still working is something we could not have imagined back in those days.
00:11:25What we're learning is how the wind of the sun interacts with the wind from the other stars nearby.
00:11:31The Voyager 1 entered interstellar space in 2012.
00:11:36And it was in the northern hemisphere of the heliosphere.
00:11:40The heliosphere is this huge bubble the sun creates around itself.
00:11:45The Voyager 1 was in the north.
00:11:47The Voyager 2 was in the south.
00:11:49We were surprised to find it in terms of where the heliopause is.
00:11:53It's almost as far from the sun in the south as it is in the north.
00:11:57By measuring the distance to the sun at two different points, it helps us model this interaction between the heliosphere and interstellar space.
00:12:08It's a very important interaction because the heliosphere shields Earth.
00:12:13Over 70% of what's outside can't get in because of this outward flow of the wind pushing things back.
00:12:19The size of the heliosphere is really very important in terms of the radiation environment here on Earth.
00:12:25We had no good idea how big the heliospheric bubble was.
00:12:30That's what Voyager determined.
00:12:32It changed our view of the solar system.
00:12:37What Voyagers have told us are the first hints of what's in the space between the stars outside the heliopause.
00:12:58And the scientists there are fundamentally having to change their models of what they thought that space was like.
00:13:05To find out what's out there, it's just amazing.
00:13:17People really thirst for that fundamental knowledge that's being exposed by the Voyager spacecraft.
00:13:24It's about giving people the sense of exploration, and adventure, and hope.
00:13:40And that's very important to us.
00:13:46The science return is there. If we can keep the spacecraft healthy, the science takes care of itself, and we'll come back.
00:13:58There's still discoveries out there.
00:14:02But it's a lot more challenging now.
00:14:05For Voyager 1, the one-way light time is 20 hours.
00:14:15That means the signal coming from Voyager 1 takes over 20 hours to get to Earth.
00:14:20Moving at the speed of light, a zippy 186,000 miles per second.
00:14:24Voyager 2 is not far behind. It's about 17 light hours away from Earth.
00:14:29If I come in on a Monday morning and I say,
00:14:35Hey, Voyager, how you doing? Good morning.
00:14:37It's going to take me until Tuesday afternoon that I get a response back from Voyager that says,
00:14:42Hi, I'm doing great.
00:14:44The other issue is that we're all older now, and that age casts sort of a shadow over the things that we do.
00:15:02This ship was launched, you know, what, 45 years ago?
00:15:06Well, people don't know the details of what is behind it.
00:15:10What are they now? They're 80s and 90s.
00:15:12I mean, I'm 87.
00:15:15That's a real issue.
00:15:17Nowadays, when we're talking about decisions we're making in the engineering world on the project,
00:15:23a lot of it goes way back to when they built the spacecraft.
00:15:27What were the specifications on this part? What was it tested at?
00:15:33How conservative were they when they put this number on this piece of paper 40 years ago?
00:15:40And you go back and you try to find those original engineers that wrote the document and a lot of them are no longer alive.
00:15:51I read through these documents that I worked on back in the beginning, signed by all these people that I had worked with.
00:16:03Most of those people are gone.
00:16:06It may be a race between how long we as individuals live versus how long the spacecraft can still communicate with us.
00:16:15There's such a knowledge base that's in the engineer's head that it's critical to have people who are on the project and have been on the project a long time continue to work on the project as long as possible.
00:16:30You know, Jeff Hall, Sun, Enrique.
00:16:34Most of us are single point failures. Yeah, I'll be 70 next week, almost in the old days.
00:16:43I've been working on Voyager for so long, I can't imagine leaving the project.
00:16:49They have what you can't get from paper. They understand the idiosyncrasies of the spacecraft.
00:16:55Their whole professional careers are on this mission and making this mission successful.
00:17:01It's hard for me to just see this machine. It's kind of like part of me.
00:17:14Very proud of what I'm doing, especially from my background.
00:17:20I was born and raised in Mexico.
00:17:23I was born and raised in Korea, South Korea, in a small farming village.
00:17:29In Columbia, as a child, I never in my wildest dreams thought that I would end up working with this particular project.
00:17:39That was never in my mind.
00:17:42I grew up in Wigan, Mississippi. I wanted to get into a technical field.
00:17:47But during that time, segregation was big and weren't allowed to go to schools where they offered technical degrees.
00:17:54So I went to school in Alabama, Tuskegee Institute, now Tuskegee University.
00:18:03I came to the States for a small vacation. November 1968.
00:18:12Then I met my to-be wife, my guardian angel.
00:18:19I immigrated to the United States after high school.
00:18:25I came in December 1977.
00:18:30But I didn't know about the voyage back then.
00:18:33I came on in 1978 just prior to the Jupiter encounter.
00:18:42After exactly 18 months of flight, Voyager 1 will reach Jupiter on March 5th.
00:18:50Before the Jupiter encounter, we had to design and develop new and different sequences.
00:18:55Or get pictures and whatever kind of science they wanted to take.
00:18:58We didn't know what we were going to find.
00:19:02We had sort of set up the camera on the spacecraft and we would just stare at the planet.
00:19:08And we'd take pictures.
00:19:11And the pictures would produce movies.
00:19:17I mean, it was incredible.
00:19:29We would see something that we can't even describe.
00:19:32It appears to be radiating 30% more energy than it absorbs from the sun.
00:19:39In terms of the foot of the flux tube, those are the same magnetic field lines that thread the torus.
00:19:44So, yes, yes.
00:19:45We were immersed with one discovery after the other.
00:19:48The main surprise was the amount of activity.
00:19:51On Io, you showed us the picture of the volcano there.
00:19:53And that was news.
00:19:55Before Voyager, the only known active volcanoes in the solar system were here on Earth.
00:20:02And then we flew by Io, which is a moon about the size of our moon.
00:20:06It had 10 times the volcanic activity of Earth.
00:20:10Suddenly, we realized our terra-centric view of what the planets in the solar system were like.
00:20:17Nature was really doing these incredible things.
00:20:21It was exciting.
00:20:25We were all early in our Voyager experience.
00:20:35That was a long time ago.
00:20:42There is still a lot more we need to learn about the solar system.
00:20:47But the spacecraft isn't all as it was 40 years ago.
00:20:52I like to think of these spacecraft as senior citizens.
00:20:56Over time, they've aged differently.
00:20:58Different things are broken, so they don't behave quite the same today as they did at launch.
00:21:03Voyager 2 has more challenges than Voyager 1.
00:21:21Voyager 2 is colder and has less power margin.
00:21:28Honestly, we don't really know why it's colder.
00:21:32It goes back to the fact that over time, these twin spacecraft have aged differently.
00:21:37The whole system is cooling down.
00:21:40In particular, the hydrazine, the propellant that we use to keep the spacecraft oriented to point back to Earth.
00:21:48Sixteen tiny rocket thrusters fueled by decomposing hydrazine turn the craft or change its velocity when required.
00:22:00We're within a couple of degrees of having that freeze.
00:22:05As it cools down and eventually freezes, we can no longer point the spacecraft.
00:22:11And it'll just drift off and that'll be the end of the mission.
00:22:16One of the other sticky issues on Voyager 2, the only antenna that can talk to Voyager 2 is DSS Deep Space Station 43 in Canberra, Australia.
00:22:34DSS-43 is going to be down from February of 2020, clear out to about as late as December 2020.
00:22:57When that antenna is down, we cannot command Voyager 2.
00:23:02The mammoth electronic ears of today's deep space network can and do continuously track and receive data from probes to the edge of our solar system.
00:23:14We have stations north of Barstow, California, others in Madrid, and another one in Australia in Canberra.
00:23:29Borgia 2 can only be seen in the southern hemisphere because it's so far down and out of the plane of the planets.
00:23:44So it can only be seen by the Australian Deep Space Center site that's located outside of Canberra.
00:23:51DSN announced that they were going to be having some big maintenance that they had to do on the Canberra station, the 70 meter station.
00:24:11We'll still get downlink. We'll be able to look in and view Voyager 2, make sure it's healthy, but we don't have uplink capabilities.
00:24:30So if there's a problem with the spacecraft, we can't send something to fix it.
00:24:37So we're really kind of, um, scrambling is not the right word, but we're, maybe it's controlled scrambling.
00:24:47Right now, what we have for Voyager 2 is unsustainable, period.
00:24:52The spacecraft would not survive the downtime.
00:24:57We have to put enough margin on our power and thermal at the start of that antenna downtime to last a year.
00:25:05Trying to plan how do we get through that period without causing something to freeze.
00:25:10So, full disclosure, I've had a lot of trouble with this car this year.
00:25:27We cannot fix it, uh, although we're close.
00:25:32It's the engine control module, ECM.
00:25:35I'm trying to think of a way, it's kind of like, as we try to keep Voyager warm,
00:25:39we think that it's, when it's cold, it fails.
00:25:42So I'm thinking of a way to bring a heater in and maybe go off the battery
00:25:45and warm up the engine control module if it ever fails to, uh, to start.
00:25:49Knock on wood, it's started for the last three weeks, so.
00:25:56I'm not that mechanically minded, surprisingly, for a rocket scientist,
00:26:00but, uh, I certainly had the opportunity.
00:26:02My dad is incredibly handy, he can fix anything,
00:26:05and I could have been out with him learning all this stuff,
00:26:08but, uh, I was inside practicing the piano.
00:26:11Music's like a second career. I'm in six groups.
00:26:19Sometimes it's just running from one musical rehearsal to the other.
00:26:24I try to keep them straight.
00:26:27I just couldn't decide throughout my life, music or engineering.
00:26:31I decided just to keep deferring the decision.
00:26:34I still pinch myself that these musical dreams of childhood have come true,
00:26:39just as my, uh, JPL dreams came true.
00:26:42Um, who worked on Voyager in the, in the band here?
00:26:46One, Jeff, did?
00:26:48No, I didn't.
00:26:49Everybody's too young, so.
00:26:51Yeah.
00:26:52My journey to Voyager is a long one.
00:26:55It began when I was a nerdy kid off in Kansas, uh, visiting my grandparents.
00:27:00Thanks a lot.
00:27:04Uh, can you hear me in the back okay with the cordless headset mic?
00:27:07We're good? Wonderful.
00:27:09Anybody in eighth grade?
00:27:10When I was in eighth grade, I had this weird explorer gene
00:27:14and wanted to go see all of planet Earth.
00:27:17Every corner of planet Earth.
00:27:19My grandparents, they felt bad.
00:27:21They're like, you know, we'd love to take you somewhere and go exploring.
00:27:24We can't. We have to farm wheat.
00:27:26But I have a magazine that will take you places.
00:27:31So for the first time they showed me National Geographic.
00:27:34And I read five years of back issues.
00:27:38Sixty issues cover to cover over two weeks.
00:27:41This was about 1981.
00:27:43Right when the Voyager spacecraft were flying by Saturn.
00:27:47We're on our way for a very interesting ride through the Saturn system.
00:27:55In the course of its journey, Voyager discovered three new moons in Saturn's orbit
00:28:00and relayed baffling photographs of Saturn's rings.
00:28:04We had estimated that there were hundreds of rings.
00:28:09What they're finding is we should be saying thousands.
00:28:13These places had never been visited before.
00:28:16Seeing them for the first time was just this glorious feeling of exploration.
00:28:21And as soon as I saw those images of the planets, the dozens of moons,
00:28:26I was hooked.
00:28:27I just, I knew that somehow I wanted to be involved in the space program.
00:28:33And in eighth grade, I said, I don't know anything about this JPL,
00:28:37what it's like to live in California, but that's where I want to work.
00:28:40That's what I want to do with my career and my life.
00:28:45Took three attempts to get in the door.
00:28:47But finally, my JPL dreams came true.
00:28:50What Voyager are we talking about?
00:28:55Both.
00:28:56From the 70s?
00:28:57Yeah, yeah.
00:28:58You were there and did that?
00:29:00No, I'm not that old, but I'm working it now.
00:29:02So there's only like 10 of us working it now.
00:29:05That was my question.
00:29:06How many there were?
00:29:07Very few.
00:29:08Okay.
00:29:09But you're still following it.
00:29:10It's still out there?
00:29:11Well, yes.
00:29:12Yeah, we're talking to both every day.
00:29:13It's still out there.
00:29:14Both are still out there.
00:29:15Two most distant human objects.
00:29:17I did not know this.
00:29:18We've penetrated the bubble.
00:29:20We're outside now.
00:29:21We're in interstellar space with both spacecraft.
00:29:23So yeah, we're still talking to both.
00:29:25Trying to keep them alive.
00:29:33I'm the newest member of Voyager.
00:29:35You never know when you're the new guy coming in,
00:29:37how that's going to work out.
00:29:38And they've welcomed me with open arms.
00:29:41I'm living out my childhood dream
00:29:43in kind of the twilight of my career
00:29:46and then the twilight of the Voyager mission,
00:29:48helping keep these two beautiful spacecraft going.
00:29:51So we're sending up the CRS command here,
00:30:06command Saturday?
00:30:08Yes.
00:30:09Okay.
00:30:10What's the time they go up?
00:30:14It's going to go up around 2.45 a.m. Saturday morning.
00:30:20Okay.
00:30:21Fernando, you probably would already do this,
00:30:23but can you send out a note when you see,
00:30:26when you're watching?
00:30:27Oh, absolutely.
00:30:28Yeah, I will send a complete report
00:30:31as to what the power change that we saw
00:30:35and receiving of the commands, yes.
00:30:37Yes.
00:30:38Okay.
00:30:39Trying to get the whole Voyager 2 all lined up
00:30:41so it can ride out this antenna downtime.
00:30:48In order to do that,
00:30:49we're going to have to turn off instruments,
00:30:51or at least turn off instrument heaters.
00:30:56We have five fields and particles instruments
00:30:59on each spacecraft.
00:31:00One of those instruments is not working on Voyager 1.
00:31:07But 9 out of 10 are still functional after 40 years.
00:31:11At some point,
00:31:12we have to start turning off science instruments.
00:31:15We lose about 4 watts of power generation a year,
00:31:19so we have to keep turning things off.
00:31:21And that's a real Sophie's choice.
00:31:23How do you decide which science instruments turn off first?
00:31:26But one of the beautiful things,
00:31:28all science instruments have heaters.
00:31:30So before you turn off a science instrument,
00:31:32we'll try to turn off a heater
00:31:34or even swap heaters through a lower-powered heater.
00:31:37And maybe the instrument survives.
00:31:41We need to turn off the heaters to save the power margin,
00:31:44to give us the power margin.
00:31:46Here's the power margin for Voyager 1, 10.1 watts.
00:31:53Then we go to Voyager 2,
00:31:56we only have 7.5 watts.
00:32:00Right now.
00:32:01Do the math.
00:32:03And we use 4 watts per year.
00:32:07The light bulb in your fridge is probably 20 watts.
00:32:11So that means we have a year and change
00:32:16to do something.
00:32:17because we're not going to have the power to keep going.
00:32:31That's what we're starting just within the next week or so.
00:32:35We're going to be turning off a heater on the CRS instrument.
00:32:38The CRS is the cosmic ray subsystem.
00:32:44Do we turn one on and then one off or?
00:32:48Yes.
00:32:49I didn't know this.
00:32:50How soon, what are the steps and the commands?
00:32:53Well, we turn off Bay 1 heater to gain the power margin
00:32:57and turn off the CRS replacement heater
00:33:00and turn on the CRS supplement heater
00:33:03and then we have two mitigating commands.
00:33:05Okay.
00:33:06And then we turn on the Bay 1 heater back on.
00:33:10Okay.
00:33:11Doom, did you say replacement or supplemental first?
00:33:14We turn off the replacement heater
00:33:16and turn on the supplement heater.
00:33:18Okay.
00:33:19Baby, I said it.
00:33:20Alright, thank you.
00:33:30I think we feel there's a 50-50 chance
00:33:31that the instrument may freeze.
00:33:33So we don't know.
00:33:45I'm there.
00:33:46Early bird.
00:33:47Get my coffee.
00:33:48This is from home.
00:33:50My creamer.
00:33:51And my sugar.
00:33:53Cause I'm the only one that does sugar.
00:33:55Everybody's too healthy.
00:33:57I heard that.
00:33:58I'm not.
00:34:03What we're doing is turning off heaters.
00:34:09We're going to do that with the CRS.
00:34:11If it works, one more success.
00:34:14But we'll see.
00:34:15Oh, we'll see.
00:34:27One six zero decimal.
00:34:30Charlie Foxtrot-Golf.
00:34:35Copy.
00:34:36I'll thank you.
00:34:37Taking this.
00:34:38I was thinking.
00:34:39Yeah.
00:34:40We were talking.
00:34:42No.
00:34:43's gonna get better.
00:34:44Right?
00:34:45I was thinking,
00:34:46...
00:34:47...
00:34:48That's good.
00:34:49You know?
00:34:50Yeah.
00:34:51Yes.
00:34:52So, Mensch, well...
00:34:53I'll think so.
00:34:54So many bucks a minute.
00:34:55You 알고.
00:34:56Kirti-kirti-kirti-kirti-kirti-kirti-kirti-k —
00:34:57Les commandes sont tous échecés par le command de la commande centrale.
00:35:15C'est un environnement 14-bit command.
00:35:19Ça va dans le système de power.
00:35:22Le power subsystem décodes, et c'est déterminé ce relay qui est demandé à être en ouverte.
00:35:31Le power subsystem exécute ce command.
00:35:35Ce que nous remarquons, c'est que, occasionally,
00:35:39ce command n'est pas récuité.
00:35:45Si vous pensez à tous les commandes sur Voyager 2,
00:35:48si vous commande un certain command dans un certain nombre ou un certain nombre,
00:35:53vous allez avoir un autre command dans un certain nombre.
00:35:57Voyager 2 est le seul qui a cette issue.
00:36:00Nous n'avons pas vraiment réalisé, à un certain niveau de satisfaction,
00:36:05ce qu'il y a une erreur sur le pouvoir subsystem qui cause ça à cause.
00:36:09Donc, c'est peut-être plus difficile.
00:36:14Par le temps que vous trouvez que quelque chose a fait,
00:36:17vous savez, c'est 16 ans ou 20 ans ou 20 ans.
00:36:20Donc, vous ne pouvez pas faire des choses très rapidement.
00:36:23Donc, vous avez besoin d'anticipation ce que l'on va faire.
00:36:26Et vous avez besoin d'anticipation de l'affichage encore.
00:36:44Sous-titrage MFP.
00:37:14Now the CRS is at minus 76 Fahrenheit.
00:37:19We never tested it that cold because we never imagined we would be that cold.
00:37:25But you see, the scientists are smart.
00:37:27They probably designed their instrument knowing there might be an opportunity in the mission
00:37:33where they'll have to settle for flying without their heaters because the power will be so precious.
00:37:41We were able to save that approximately 5 watts of power.
00:37:44By turning off the heater and still have the instrument work.
00:37:49That's the first time in 42 years that the instrument heater has been off.
00:37:52I keep a trend of the power.
00:38:08Sure, this is the end.
00:38:112030.
00:38:132030.
00:38:15Other things might happen that alter this getting to 2030.
00:38:20I'm sure.
00:38:21But we'll be content right here.
00:38:262025, right there.
00:38:29We're on an extended mission.
00:38:31So it's not its prestige.
00:38:33Some people decided to do other things.
00:38:38But I decided to stay.
00:38:41I like because it's full of challenges.
00:38:45I never thought that programming or reprogramming a spacecraft was going to be part of my life.
00:38:52I joined Voyager for the Uranus encounter.
00:38:58Uranus is the most distant object from Earth, ever visited by a man-made craft.
00:39:03I was an assembly language programmer.
00:39:06The lowest level that you can program.
00:39:08I was hired with JPL as an independent contractor.
00:39:15I also joined the Voyager just before the Uranus encounter.
00:39:19I went to University of Texas.
00:39:22And JPL came to our school to recruit students.
00:39:26And I didn't know everybody else was doing it.
00:39:28I didn't know what I was supposed to be doing.
00:39:29But it was just exciting to see everybody getting excited.
00:39:34It's been a lot of fun watching them.
00:39:36They see something they consider interesting.
00:39:37And they're all jumping up and down and shaking hands.
00:39:39It's like somebody just had a kid.
00:39:43The world was looking at Voyager depressed.
00:39:46If they knew that you were for Voyager, they wanted the inside scoop.
00:39:51Voyager 2's approach to Uranus is now a little more than 16 hours away.
00:39:56About two minutes ago, Voyager 2 passed through its closest approach to Uranus.
00:40:02We were seeing the images come down bits at a time.
00:40:09Click, click, click, click, click.
00:40:12It was amazing.
00:40:15We were making history.
00:40:16And then from that point on, I was just, you know, I was just sore.
00:40:20Today, they hit the jackpot.
00:40:23Six hours of information as Voyager passed in and out of the planet's orbit.
00:40:27All right.
00:40:33So all my friends, you made this one possible.
00:40:35Thank you.
00:40:36Let's see if we get some good data.
00:40:37Let's see if we get some good data.
00:40:40After finishing the encounter, I was hired to stay with Voyager.
00:40:47Little by little, as the team got smaller and smaller, I assumed other tasks.
00:40:54When the power subsystem guy left, I took over that function.
00:41:00When the propulsion guy left, I took over that function.
00:41:06It's amazing how many heads I have.
00:41:13After the Uranus encounter, I didn't want to go anywhere else.
00:41:17I got married on the project, and I had my son on the project.
00:41:23There are so many personal feelings attached to it.
00:41:29My family, you know, like my sons, they are so familiar with the Voyagers.
00:41:35My older son, he sometimes calls when he was in college,
00:41:38and then he says, like, oh, so how's a Voyager?
00:41:41You know, it's just like, how's a grandma, right?
00:41:43So it's just like a part of our family life.
00:41:49When did you first build this Lego model?
00:41:52It was probably elementary school age.
00:41:54I'm going to say sometime then.
00:41:56You have the antenna piece.
00:41:57You have the RTG, the power generator.
00:41:59That's this piece.
00:42:00And this is the scan platform with the cameras
00:42:02as well as some other instruments that were used.
00:42:04When I first came from Korea, after high school,
00:42:19I didn't really have a plan.
00:42:21I was young, and I wanted to see the world.
00:42:24So I joined the military, U.S. Army.
00:42:29It's like one of the best experiences I ever had.
00:42:32My mom shared her life, and she wanted us to be educated,
00:42:44have a better life, so she tried so hard.
00:42:48She passed away when I was in the middle school.
00:42:52I always wanted to honor my mom.
00:42:54Yeah, I felt like I should be proud of my auntie,
00:43:02if she could see me now.
00:43:11So as long as a boy who needs me,
00:43:14I can never, ever not answer.
00:43:16My schedule keeps changing.
00:43:26My will retire and keep changing.
00:43:30People keep moving that.
00:43:31It used to be 2020.
00:43:33When I see that Voyager,
00:43:39it doesn't need me,
00:43:42I will leave.
00:43:44And enjoy the last phase of my life.
00:43:48Travel.
00:43:49My wife loves travel.
00:43:51Visit the kids, the grandkids.
00:43:54They live in San Francisco.
00:43:56Eli and Lola.
00:43:58They're in San Francisco.
00:43:59I mean, it's a piece of cake to go there.
00:44:02Well, not really.
00:44:04As you get older,
00:44:05those seven-hour drive,
00:44:08you have to stop.
00:44:10Twice.
00:44:16We sort of pick milestones.
00:44:20I'd kind of like to be here
00:44:21if and when it makes 50 years.
00:44:24My personal goal
00:44:26is to have the mission last
00:44:28for 50 years.
00:44:29I'm hoping that
00:44:30we can make it to
00:44:312027 so we can say,
00:44:33oh, 50 years,
00:44:34that would be so unique.
00:44:36For me,
00:44:37that's a technical success.
00:44:40It's an achievement.
00:44:42It's a goal
00:44:43that I'd like to participate in.
00:44:46We're ready for our downtime.
00:45:15Three months away.
00:45:21We're building a giant background sequence now
00:45:23that will carry Voyager
00:45:25through its entire downtime
00:45:26early February of 2020,
00:45:28clear through as late
00:45:29as December of 2020.
00:45:31I mean,
00:45:32if we do it right,
00:45:33I'd say we have 95% chance
00:45:35of coming out just fine.
00:45:38You have to remember,
00:45:39these spacecraft have been flying
00:45:40for 40 years,
00:45:41and for the last 30 years,
00:45:43they've been pretty unattended.
00:45:44We don't command the spacecraft
00:45:46very often.
00:45:48The spacecraft is designed
00:45:49so that it can fly itself.
00:45:52So it's been very autonomous,
00:45:54and it's worked very well
00:45:55since we left Neptune.
00:45:57Good morning,
00:45:58and welcome to the 5 o'clock edition
00:46:00of Voyager Update.
00:46:01I'm your host,
00:46:02Suzanne Dodd.
00:46:03Voyager is 510,000 kilometers
00:46:07above the swirling cloud tops of Neptune.
00:46:11Well, this is the day.
00:46:13We've been in observatory phase
00:46:15for months,
00:46:16seeing Neptune
00:46:17as a slowly growing dot
00:46:19to something filling
00:46:23the television screen.
00:46:24Beautiful, austere, blue world.
00:46:28The spacecraft entered the Neptune system
00:46:36and safely made its closest approach
00:46:38to the giant planet
00:46:39and its unusual moon, Triton.
00:46:42Triton looks unlike anything
00:46:44we have seen before.
00:46:46It's got at least three distinct types of terrain.
00:46:50We're all just amazed.
00:46:51Could one of you wax philosophical
00:46:54about how you feel
00:46:55after 12 years
00:46:56and being here
00:46:57at the last planet?
00:46:59Now, you know,
00:46:59it's all going to sink in
00:47:01in the next few days.
00:47:02That would be the time
00:47:03to ask the question.
00:47:05Now it is on
00:47:06toward the vast sea
00:47:07of interstellar space.
00:47:10Once I went by Neptune,
00:47:12people sort of forgot about Voyager.
00:47:14Frankly, I didn't really know
00:47:15what had become of Voyager
00:47:17when I left in 1990.
00:47:19Many of the world's journalists
00:47:21have broken down,
00:47:23packed up,
00:47:23and already left
00:47:24the jet propulsion site
00:47:25here in Pasadena.
00:47:28In, I think, 2004,
00:47:30there was a termination review
00:47:31for Voyager.
00:47:32We had been going
00:47:33for more than 10 years
00:47:34after Neptune.
00:47:35There were some questions
00:47:37at NASA
00:47:37whether or not
00:47:38we were on a mission
00:47:41that was anywhere
00:47:42near finishing.
00:47:44Why would you terminate the mission?
00:47:45Well, because it costs money
00:47:46and we haven't seen anything.
00:47:49in 2005
00:47:50is when we got
00:47:51the first little hints
00:47:52that we might be
00:47:53closer to the edge
00:47:54of the heliosphere
00:47:56because we felt
00:47:57the termination shock.
00:48:02Once we reached
00:48:03the termination shock,
00:48:04it was the supersonic solar wind
00:48:06abruptly slows down.
00:48:08As it approaches
00:48:09the heliopause,
00:48:10that told us
00:48:10we were finally getting close.
00:48:12I think if that hadn't happened,
00:48:18there was probably
00:48:19a good chance
00:48:19that they would have
00:48:20canceled Voyager.
00:48:21If they had terminated it
00:48:22in 2004,
00:48:24we would have never
00:48:24known the distance
00:48:26of the heliopause.
00:48:27We would have never known
00:48:28the interaction
00:48:30of the magnetic field
00:48:31and what happens
00:48:32at the heliopause.
00:48:33It's one thing
00:48:34to have a theory
00:48:35about what happens.
00:48:36The Voyager spacecraft
00:48:37are actually there
00:48:38in situ.
00:48:39Not only that,
00:48:41that there's two spacecraft.
00:48:43For a modeler,
00:48:44it's important
00:48:45because anybody
00:48:46can make a model
00:48:48that fits one data point,
00:48:50one Voyager spacecraft.
00:48:51But when you have
00:48:51two data points
00:48:52that your model
00:48:53has to fit,
00:48:54then it becomes
00:48:54much more accurate.
00:48:56So it's important
00:48:57to have both spacecraft
00:48:58still flying.
00:49:09All right.
00:49:10Good morning, Jeff.
00:49:11Good morning.
00:49:11Good morning.
00:49:12Fine, thank you.
00:49:13All right.
00:49:13Good morning.
00:49:14Good morning.
00:49:15Thank you.
00:49:17Andrew, I got us
00:49:19goodies.
00:49:20Yeah, Andrew's at it again.
00:49:22Yeah.
00:49:24Okay, guys.
00:49:25Let's go ahead
00:49:26and get started.
00:49:28Systems.
00:49:31They both look good.
00:49:32No gaps,
00:49:33no DRs,
00:49:34and telecoms fight.
00:49:35This morning,
00:49:36we had the antenna
00:49:38bullseye calibration.
00:49:40Assuming it all went well.
00:49:41Everything was great.
00:49:42By the book.
00:49:44Just a reminder,
00:49:45tomorrow,
00:49:46Todd is giving
00:49:46a presentation
00:49:48on the fuel
00:49:50consumption
00:49:52and remaining.
00:49:53Yeah.
00:49:54He will tell us
00:49:55whether we're going to
00:49:55run out of fuel or not.
00:49:56Yeah, yeah.
00:49:57Slightly important.
00:49:58Remember,
00:49:59you always don't know.
00:49:59Yeah, right.
00:50:06We are going to be,
00:50:16for Voyager 2,
00:50:17we're going to be
00:50:17in the blind.
00:50:19We think we're ready.
00:50:21Yeah, everything seems
00:50:22to be ready.
00:50:23And double-check,
00:50:26triple-check,
00:50:27make sure that
00:50:28everything is ready to go.
00:50:30And it seems like
00:50:31that's the case.
00:50:33There may be some
00:50:34last-minute tests
00:50:35that have to be done,
00:50:36but for the most part,
00:50:37I think we're ready to go.
00:50:39We have made the decision.
00:50:41The power that we have
00:50:43provided to the spacecraft
00:50:45is enough
00:50:47to be able to go
00:50:48beyond the other side
00:50:50of the downtime.
00:50:53It's still
00:50:54a 42-year-old spacecraft.
00:50:57And you're asking it
00:50:58to become
00:51:00a 43-year-old spacecraft.
00:51:03We don't know
00:51:04what's in store for us.
00:51:26Today is a special event.
00:51:29If we're not ready,
00:51:30we cannot let it go down.
00:51:33We're under a lot of stress.
00:51:36There are a lot
00:51:37of uncertainties.
00:51:38This is a challenge
00:51:39of this job.
00:51:41I don't understand myself
00:51:42why I'm so into it.
00:51:45It's just kind of feeling
00:51:46you're responsible for it.
00:51:52We're going to be
00:51:53doing a rotation
00:51:55of the spacecraft
00:51:56around the Earth line.
00:51:57It's called a mag roll.
00:52:00A magnetometer roll
00:52:02is a calibration
00:52:03we do for the
00:52:03magnetometer instrument.
00:52:07And what we do
00:52:08is maneuver the spacecraft
00:52:09in 360 degrees.
00:52:11The rotation
00:52:15of the whole spacecraft
00:52:16is guided
00:52:17by the gyroscope.
00:52:20The gyros consume
00:52:21a certain amount
00:52:21of power,
00:52:22which is 14.4 watts.
00:52:24The spacecraft
00:52:25doesn't have
00:52:25that kind of power.
00:52:27So what we do
00:52:28is we turn
00:52:29a heater,
00:52:31we turn it off,
00:52:32and that gives us
00:52:3424 watts.
00:52:36And then we turn
00:52:37almost instantaneously
00:52:39the gyros on.
00:52:42Sweeps 360 degrees,
00:52:44gets the magnetic field
00:52:46in all directions,
00:52:47and it uses that
00:52:48to calibrate the instruments
00:52:50and keep them
00:52:51operating properly.
00:52:52after the whole thing,
00:52:54then we reverse everything
00:52:56back to what we used to be.
00:53:00We're expecting to have
00:53:01a very good mag roll.
00:53:03How do you know
00:53:13it's working?
00:53:14If something
00:53:15stops working,
00:53:16immediately
00:53:17the power
00:53:19will let us know
00:53:20that there is
00:53:21something funny.
00:53:22But that's never
00:53:23been the case.
00:53:25And hopefully
00:53:26it won't happen today.
00:53:304-3 Voyagerace.
00:53:32Yeah, we'd like to
00:53:34give you a briefing
00:53:36about the mag roll.
00:53:38I'm ready.
00:53:39We're expecting
00:53:40variations in downlink.
00:53:42Please disable
00:53:43CONSCAN
00:53:44at
00:53:440230
00:53:46and
00:53:47CONSCAN
00:53:47enable
00:53:48at
00:53:490320.
00:53:51That is a film.
00:54:07OK.
00:54:09So, things are happening.
00:54:17The green one
00:54:18is the roll gyro position
00:54:20and that one
00:54:22will tell us
00:54:23when we start rolling.
00:54:25And that will be
00:54:26a little bit delayed
00:54:27from what we see
00:54:30from the station
00:54:30because we have
00:54:31that five to six minutes
00:54:33and I always put a timer
00:54:35to start looking
00:54:36for this type of signals.
00:54:38is
00:54:40going
00:54:41to be
00:54:42a little bit
00:54:42but
00:54:43that is
00:54:43an
00:54:43maybe
00:54:44that is
00:54:44going
00:54:45to be
00:54:45that is
00:54:45a little bit
00:54:46of a
00:54:47놀라
00:54:47to the
00:54:48school.
00:54:48That is
00:54:48the
00:54:49river
00:54:51is
00:54:52going
00:54:52to be
00:54:52going
00:54:54to be
00:54:54going
00:54:55to be
00:54:56going
00:54:56to be
00:54:57like
00:54:57a lot of
00:54:58know
00:54:58the
00:54:59way
00:55:00will
00:55:01to be
00:55:01have
00:55:02to be
00:55:03good
00:55:04to be
00:55:04to be
00:55:05an
00:55:05good
00:55:06to be
00:56:10I grew up in Bogota, Colombia.
00:56:14My ex-father-in-law, I met him in 1973.
00:56:19I was 16 years old.
00:56:21At that time, he was already a well-established painter.
00:56:26Armando Villegas,
00:56:27he opened my eyes to the art of fine art.
00:56:33It became a big part of my life.
00:56:40But I knew as a child
00:56:54that I wanted to be an aerospace engineer.
00:56:58The moon landing was the major, major thing for me.
00:57:08Looking at the moon,
00:57:10there were people on the moon.
00:57:11Sous-titrage Société Radio-Canada
00:57:41But being in Colombia, there was nothing, no space program.
00:57:48So I had no choice.
00:57:51I said, okay, I'm going to come to the United States.
00:57:55I knew that probably I would never go back to Colombia.
00:58:01Saying goodbye to my family, that was not easy.
00:58:07I never saw my father cry.
00:58:11So the only time that I saw my father cry was the night before.
00:58:20And we were saying goodbye.
00:58:24And we embraced.
00:58:26And that was the very first time that I saw my dad crying.
00:58:29It's beautiful to remember that, you know, seeing that kind of emotion coming out of your father that never cried.
00:58:41So it wasn't easy.
00:58:43But I was ready.
00:58:45I came here June 11, 1981.
00:58:53I had no prospects of a job.
00:58:57And I was the sole provider.
00:58:59It was very difficult.
00:59:03I was able to ask for a hamburger.
00:59:07I had that much English.
00:59:08And I had to work in construction.
00:59:12Actually, it was not construction.
00:59:13It was destruction.
00:59:14I didn't have the proper gear.
00:59:21I was eating dust.
00:59:23And one day, one of those heavy doors landed on my foot.
00:59:29I could barely walk.
00:59:31But regardless of the challenges, I was happy.
00:59:37I knew that I was on my way to something better.
00:59:40I got into the University of Texas for aerospace engineering.
00:59:46Later, I came to JPL asking for advice.
00:59:50I came asking for advice.
00:59:54And at the end, he said, it was a really nice interview.
00:59:59I couldn't believe it.
01:00:02A couple of years later, after graduation, in May 16, 1988, that's when I began to work at JPL.
01:00:20I got it as well.
01:00:39Thank you.
01:00:50And probably we need to turn cameras off.
01:01:00I need to go and consult with.
01:01:20So that's it.
01:01:27So I may want to check on my phone if you're out.
01:01:29Are you going to have me sit down?
01:01:30Is that the idea?
01:01:31Oh, yeah.
01:01:32Oh, yeah.
01:01:32Okay.
01:01:32So I can hide my phone in my pocket.
01:01:35Yes.
01:01:35Okay.
01:01:41So can I ask what happened Saturday night?
01:01:44No.
01:01:50You know, basically, it didn't go quite as we wanted it to.
01:01:56So we're working through what did happen.
01:01:59And that's about as much as I can tell you right now.
01:02:02So is the Camp Air satellite maintenance coming out?
01:02:06Correct.
01:02:07Is it still in the next week?
01:02:10That's to be determined.
01:02:13We have to make sure that Voyager 2 is okay before we take the antenna down.
01:02:20What's the Camp Air satellite maintenance coming out?
01:02:24Hello?
01:02:26Hello?
01:02:26It's been really wild.
01:02:32Basically, the my goal did not exist.
01:02:36Well, certain things happen, unusual things happen during the my goal that should have not happened.
01:02:43I mean, we do not know.
01:02:45We don't know everything.
01:02:47So we're working overtime.
01:02:49Tout le monde s'est travaillé en overtime.
01:03:03Si vous êtes en train de conduire dans la rue et la lumière change de rouge,
01:03:06vous vous mettez sur la brake,
01:03:07et en 3 secondes de secondes,
01:03:09la pédale est repressée et vous arrêtez.
01:03:11C'est parce que vous avez vu que la lumière change de rouge.
01:03:14Si vous êtes en un spacecraft,
01:03:19et quelque chose de se fait,
01:03:21nous ne connaissons pas ça
01:03:22jusqu'à ce que le signal de la radio
01:03:24qui détecte le problème
01:03:25est transmissé à la Terre,
01:03:27qui peut prendre des heures.
01:03:33Et ensuite, vous pouvez trouver
01:03:34ce qui s'est passé sur la Terre
01:03:35et faire quelque chose.
01:03:44Les engineers sont des problèmes solvers.
01:03:48C'est ce qu'ils veulent faire.
01:03:49Ils veulent faire des problèmes.
01:03:50Le plus duré le problème,
01:03:52le plus qu'ils veulent.
01:03:53Le plus duré le problème,
01:03:54le plus qu'ils veulent.
01:04:02Nous essayons de récupérer
01:04:04un step à un moment.
01:04:05C'est ce qui a été le plus grand.
01:04:08Je veux dire,
01:04:09nous avons eu des scares,
01:04:11nous avons eu des choses
01:04:12et nous avons eu des erreurs.
01:04:14Mais très rapidement,
01:04:15je veux dire,
01:04:16il n'y a rien qui a duré
01:04:17ce long.
01:04:18Et nous ne savons pas
01:04:19ce qu'il va falloir.
01:04:30Dans le CCS,
01:04:31nous avons deux processions
01:04:33pour A et B.
01:04:34Et puis,
01:04:35ce qui s'est passé,
01:04:36pour certaines régions,
01:04:37A et B,
01:04:38ne sont pas encore synchronisés
01:04:39et nous ne savons pas.
01:04:40à l'Ontinion
01:04:41à l'Ontinion.
01:04:42Ça a bit fuelait
01:04:43les Trios et
01:04:44la B1 suprés
01:04:45au même temps.
01:04:46C'est-à-dire qu'à l'Ontinion
01:04:48sur ceancel!
01:04:49Quand les deux
01:04:50s'est-à-dire,
01:04:51la power demande
01:04:52s'est-à-dire le plus
01:04:53que le plus lent et
01:04:55plus le plus fort
01:04:56de neige activer.
01:05:00La Nitron n'y a l'autinion
01:05:01si nous avions
01:05:02la tension
01:05:03sur les hautes
01:05:04à l'au situé,
01:05:05le spacecraft commence à tomber,
01:05:08et nous perdons le spacecraft forever.
01:05:11C'est un challenge au top de un challenge,
01:05:14parce qu'avec Voyager 2,
01:05:16la commande de la température change avec la température.
01:05:19Depuis la température de la température de la température,
01:05:22nous devons trouver la correcte température.
01:05:26Mais si vous ne connaissez pas
01:05:28la température change,
01:05:30nous devons faire le mieux que nous pouvons.
01:05:35C'est très stressant.
01:05:37Le temps est très important.
01:05:41Finalement, nous avons envoyé un commande.
01:05:48On les gyrus off,
01:05:50et les gyrus sont retournés.
01:05:53Nous nous avions les mains,
01:05:56nous espérons pour le meilleur.
01:05:58Tout le monde était regardé à l'écran,
01:06:01et attendait le signal.
01:06:03C'était 35 heures.
01:06:05Mais finalement,
01:06:07il s'est dit que les commandes
01:06:08ont été reçu par la température.
01:06:10c'est froid !
01:06:12Il s'est dit qu'on arrive à l'écran.
01:06:14Il s'est dit qu'on a la haute.
01:06:16Il s'est pas丰 Note.
01:06:17Il s'est alors rendu.
01:06:19C'est juste magnifique.
01:06:20C'est fou.
01:06:22Le relief que vous sentez
01:06:24vous devez que,
01:06:25vous découvrez que,
01:06:27nous avons réussi à sauver nous,
01:06:29pour sauver l'espace.
01:06:41Nous étions juste à mettre la place de l'espace
01:06:46dans la configuration normale, en termes de température.
01:06:51Tout à l'heure, ils m'ont dit,
01:06:53« OK, on va tout et rentrer à la maison. »
01:06:58New alarm bells ringing tonight on the coronavirus outbreak in this country.
01:07:02...declaring a state of emergency.
01:07:04...coronavirus...
01:07:05...tens of millions of us work from home,
01:07:08while offices sit largely empty from California to Connecticut.
01:07:20I've got this thing that says an installer,
01:07:23and it says, do you want to move the Zoom installer to the trash?
01:07:28Okay, Beth has the thing installing.
01:07:31Hey, succeeded in installation.
01:07:34Hey, I see you.
01:07:36There he is.
01:07:37There.
01:07:37Hi.
01:07:38We did it.
01:07:41I can go have a drink.
01:07:44It was simple.
01:07:46Okay, can you hear me okay now?
01:07:50Yeah, I don't know what's going on with the mic.
01:07:51For some reason, it didn't, I couldn't hear you and you couldn't hear me.
01:07:55Sorry.
01:07:56No, that's fine.
01:07:58Minky, my wife is coming for the cat.
01:08:00Basically, I had about a day notice, so I grabbed my laptop on the night of March 16th
01:08:06and headed home, and have not been back to the Voyager area since.
01:08:10So it was like, boom, the hammer came down.
01:08:13We had this anomaly January 25th.
01:08:18The antenna was actually supposed to go down February 5th.
01:08:24NASA got involved and said, you need to demonstrate that Voyager 2 is ready for this downtime, or
01:08:30we won't allow the antenna to go down.
01:08:35and then, everybody agreed if the Voyager spacecraft was safe and it was the right thing to do,
01:08:40to take the antenna down.
01:08:45They started that work March 9th.
01:08:58Deep Space Station 43 is in pieces.
01:09:01undergoing major surgery to become a better communicator.
01:09:06It'll take many months and a few nervous moments.
01:09:14They started it at March 9th, and we all went into COVID, you know, a week later.
01:09:27It is daunting and scary.
01:09:31People, people are wondering when it's all going to end.
01:09:35It's not a very happy environment.
01:09:37There's a lot of effort required to do this right, and of course, we don't want to mess it up.
01:09:45So, we're very deliberate, making sure that we don't do anything stupid.
01:10:01You just have to figure out everything that has to work right for it not to fail.
01:10:16And then, you have to do every one of those things, and you have to do every one of them correctly.
01:10:21And if you can figure out all the things that you need to do, and do them all right, you're fine.
01:10:26We may get a chance to actually test the uplink capability here in October.
01:10:34It doesn't mean that the antenna would be online, but if we can at least do a test with Voyager in October
01:10:41to say we can send a command to it, then we know that we're out of the woods
01:10:45as far as being able to command the spacecraft.
01:10:50That is the plan, but who knows?
01:10:52I mean, you're talking about mid-70s technology.
01:10:55I think the future is not certain.
01:11:25I'm the only one here, team-wise.
01:11:30The rest of the people that are here right now are our movers.
01:11:36I'll show you what the conference room looks like, because we've got essential products
01:11:41and boxes all packed up in there.
01:11:43There's nothing on the walls anymore.
01:11:44Remember all our awards?
01:11:46Big trash bins everywhere.
01:11:49I thought that we were very well prepared for the downtime, but we had to tweak things more
01:12:07than we would have since we were moving the facilities.
01:12:16NASA made the room for us to go back over to the laboratory.
01:12:20We had a lot of things to move, a lot of things to pack.
01:12:25We've been there for, like, gosh, close to 20 years.
01:12:31It's more than just taking your plant from one office to the other office.
01:12:35It was all the operations hardware got moved, got upgraded, because it's old,
01:12:40so we had to change operating systems.
01:12:43We definitely had some nightmares where some low-level engineer was told to take the network down,
01:12:51and the whole command system that Voyager uses was offline and damaged,
01:12:58and it's a bit of the low-tech things that can kill a mission.
01:13:05We struggle, you know?
01:13:06Different environment, virtual machines, but in all the adjustments,
01:13:12the new computers, the new ways of doing things, that keeps me going.
01:13:20As you know, a tragedy in the family happened,
01:13:23and right in the middle of the pandemic.
01:13:34She always had issues with high blood pressure.
01:13:37When I got home around six, I asked my son,
01:13:42where's your mom?
01:13:43He says, well, she should be at the office.
01:13:47So I called the office, nothing.
01:13:49I asked my son, can you go check on her?
01:13:52And he went and checked on her, and he found her on the floor.
01:13:57She had some kind of aneurysm.
01:14:02It was not possible to operate.
01:14:05But we kept fighting for 17 days,
01:14:09and that's when she passed away on February 7th.
01:14:1750-plus years together.
01:14:19I lost a lot of weight, about 17 pounds.
01:14:32But work keeps me busy.
01:14:36I always loved Voyager.
01:14:40It makes me feel that I needed some place,
01:14:50that I have the expertise to take the Voyager past 2025,
01:14:58maybe longer.
01:14:58We did have an initial test last night.
01:15:13We expect it to be successful,
01:15:16and hopefully everything will go back to normal
01:15:20beginning of next year.
01:15:25As time progresses,
01:15:27we're going to do less and less.
01:15:31Some would say that there are only eight more commands
01:15:34we have to issue on Voyager.
01:15:37And those are the ones that gradually
01:15:40turn down the power consumption
01:15:43until we're to the point
01:15:44where we're sitting at 202 watts,
01:15:48and we can't go any lower.
01:15:51The end is coming.
01:15:53And the end may take 10 years.
01:15:56It may take two years.
01:15:58We don't really know.
01:15:59But it's coming.
01:16:03We're going to come into the office one day,
01:16:06expect to see data from this pass,
01:16:08and we won't see it.
01:16:11And then we'll try and get some other antennas
01:16:15and maybe more antennas,
01:16:18try and really see if we can find a signal.
01:16:21and after a week, after a month,
01:16:25after three months of looking for it,
01:16:28if we still don't hear anything,
01:16:32we'll declare the mission over.
01:16:40And so, billions of miles from Earth,
01:16:45the spacecraft, its instruments dead,
01:16:47its mission fulfilled,
01:16:49may end up in orbit about some distant star.
01:16:52So, one of the things that strikes me when I think about Voyager in the early days,
01:17:05there was a time when I was a kid and I had a role in doing something for the very, very, very first time.
01:17:14As we get to the end of the mission, it becomes, it's special,
01:17:32On a 105-mile-high parking orbit, heading down over the South Atlantic on a trajectory which will...
01:17:38As we get to the end of the mission, it becomes, it's special, because it's going to be the last day.
01:17:45I'm sort of looking back, describing how it feels to fly something that's, at the time,
01:18:14only a couple of years old, but in the end, would be 50 years old, and what it means to lose
01:18:30them.
01:18:37There are things that are left behind that are sort of the residue of the work we do.
01:18:46The good friends we have, the people who worked on Voyager, all 1,200 of them, mostly gone.
01:19:00Well, it's sad, because the mission's ending, so you're not going to get the science back,
01:19:16but I think it's more related to the people.
01:19:20The people will disperse, but you won't see them as much.
01:19:23It'll be difficult for the people who are still working on the project.
01:19:29Many of them have worked on the project, if not from launch, then shortly after launch.
01:19:33So, they've put their whole career on Voyager, and so to have Voyager in will be, it'll be
01:19:40very difficult.
01:19:42I know the day's going to come.
01:19:48It's like when you see your children grow up, and you kind of feel sad at the time, and
01:19:53you kind of feel like, well, you know, we accomplished something.
01:20:00When you feel that you've gone the extra mile, then I think that you can rest, and just let
01:20:06it go.
01:20:11We count every day as a blessing, but we've learned not to bet against the spacecraft, too,
01:20:16because it always seems to find that resilient energy to keep going.
01:20:21And a large part of that is the team, the brilliant engineers and scientists I work with that have
01:20:27found ways to keep it going and delivering top-notch science.
01:20:31The technology is something to behold.
01:20:34If Las Vegas oddsmakers would have had to pay off the Optimus that honestly felt as though
01:20:39this mission would be as successful as it is, there would be a few rich people walking
01:20:44around NASA today.
01:20:45The fact is, Voyager beat the odds, incredible odds.
01:20:49And although in any mission of this type, there must be a certain degree of luck involved,
01:20:52the human factor cannot be underestimated.
01:20:55I've only worked a couple years on Voyager, but I try to stand on the shoulders of those giants,
01:21:02the people that toiled away in anonymity, keeping these two spacecraft alive.
01:21:08Just to be considered, you know, a Cub Scout alongside them, those long-term explorers, I'll take it.
01:21:16It's an amazing honor and privilege.
01:21:21The explorers are the Voyagers.
01:21:24Not us.
01:21:27We're just the drivers.
01:21:29It's like a Lewis and Clark.
01:21:39They were explorers.
01:21:41But let's imagine that they had a guardian angel looking after them.
01:21:48They were not explorers.
01:21:50They were just guardian angels.
01:22:184-3, Voyager race.
01:22:29Voyager race, station 4-3, I have you bye-bye, homie.
01:22:34I read you the same.
01:22:36And we have a command uplink with Voyager 2.
01:22:39And I'm ready to copy.
01:22:41Please turn command mod on at 1-9-4-9-0-0.
01:22:47.
01:22:52.
01:22:57.
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01:24:09...
01:24:39...
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