00:00Up near the top, they'll actually pull away from the top, just below the fairing there.
00:04Strongback retract has started.
00:06And then we just heard the call out for strongback retract starting, which is great.
00:10That's pretty much just it'll recline a few degrees just to get out of the way for wind
00:14falcon heavy lights and hopefully it goes off to space here in four and a half minutes.
00:19And as the launch pad machinery gets ready into its launch positions, we are expecting
00:26the NASA side, the NASA launch manager to conduct NLM and CLD looking for the NASA status check.
00:35This is NLM, NASA's go for launch.
00:40Good words there from the NASA launch manager, go for launch this morning.
00:43We are at T minus 3 minutes, 45 seconds for heading toward an on-time liftoff just after
00:497.26 a.m. of NASA's Roman Space Telescope.
00:53Yeah, that NLM poll is a really important one.
00:56That's the NASA launch manager, like you said, given SpaceX launch director the go, that the
01:00NASA team is ready.
01:02Behind the scenes, the NLM would have gone and polled his engineering team, the spacecraft
01:05team, safety and mission assurance, everybody on the NASA side to make sure that everybody
01:09is green and everything is looking healthy, which is great.
01:12And then as you heard, he is go for launch.
01:14So we are go for launch for NASA.
01:18And we have, as the rocket continues to put its final propellant on board, we.
01:25And we lock so complete.
01:28We also know that the spacecraft sitting on top of the nose there that's heading into space,
01:33that is on internal power.
01:35So it is running off its own batteries.
01:38Of course, it's covered up by the fairing.
01:41But it can run on those batteries for a little bit before it has to pick up some of the
01:49sun's energy.
01:50Yep, that's for sure.
01:51And we just heard on the loops, lock's load is complete for stage one, which is a great sign.
01:57So we're going to go back to Hawthorne and Zach for the last two and a half minutes before launch.
02:05Yeah, thanks, Steve.
02:05So coming up in just about 20 seconds from now, we should be hearing the call-out for stage two
02:11lock's loading completion.
02:12And at that point, the Falcon Heavy will then be fully loaded with nearly 3 million pounds of propellant
02:17comprised of RP-1 and locks.
02:20So we should be hearing that call-out for...
02:22Stage two lock's load complete.
02:23And there's that call-out right on time.
02:28Now coming up shortly, we'll be hearing a call-out for closing out of gaseous systems,
02:34called out as ground gas close-outs, and that'll consist of topping off tanks and sealing vents
02:38in order to maintain pressure in the vehicle.
02:41And we should be hearing that call-out in just about 15 seconds or so.
02:48And weather, of course, is now looking beautiful there in Florida.
02:54And we're right on track for launch in just about a minute and a half from now.
02:59Ground gas close-outs.
03:01And there's that call-out for ground gas close-outs.
03:04Now looking ahead at the T-minus one-minute mark, Falcon Heavy will enter startup,
03:09and the onboard flight computers will take over the launch countdown,
03:13and both stages will begin pressurizing for launch.
03:19So we should be hearing that startup call in just a few moments.
03:30Falcon Heavy is in startup.
03:32And there it is.
03:33Falcon Heavy is now in startup, and those flight computers are in control of the count.
03:37So we're now just waiting on the final go, no-go from the launch director for today's mission.
03:43The launch director is go for launch.
03:45And great news there.
03:46The launch director has given the final go for today's mission.
03:50So let's sit back and watch as Falcon Heavy takes the Nancy Grace Roman Space Telescope to space.
03:58T-minus 30 seconds.
04:13T-minus 15 seconds.
04:18T-minus 10, 9, 8, 7, 6, 5, 4, 3, 2, 1.
04:28T-minus 10, 9, 12, 5, 4, 4, 3, 2, 3, 2, 3, 4, 5, 6, 7, 7, 8, 8,
04:359, 9, 10, 9, 9, 9, 10.
04:35And the liftoff of NASA's Roman Space Telescope on a mission to revolutionize our understanding of the universe.
04:44All M1D chamber pressures are nominal.
04:47Falcon Heavy has cleared the tower and is on its way to space.
04:57Looks like a beautiful launch so far, Steve.
05:00Great shot there from on top of the rocket looking down and then now tracking up.
05:04Looking at those 27 Merlin engines lifting the Falcon Heavy and Roman Space Telescope off into space.
05:14Falcon Heavy soaring.
05:15Power to 11, phenomenal.
05:19Falcon Heavy soaring into the Florida sky.
05:22We are 53 seconds into this flight.
05:24The rocket will be heading into max Q.
05:27Falcon 9 is supersonic.
05:30Picking up speed and altitude very quickly.
05:35Engines will throttle down slightly to reduce the mechanical pressure and the mechanical stress on the rocket.
05:44Max Q.
05:50And we heard that call out for max Q which is the point of maximum aerodynamic pressure as the rocket
05:56is ascending.
05:57Now coming up in just under a minute from now, we're going to have a large series of events happening
06:02back to back.
06:03We'll be starting with BECO or booster engine cutoff where the engines on those boosters will power down.
06:10We'll then have side core separation of those two boosters.
06:14Followed by that, we will then have MECO of the main core and then stage separation of that as well
06:21as second engine start one following that.
06:24Now those two boosters will be heading back to Florida today.
06:28They'll be doing boost back burns to put them on trajectories back towards Kennedy in Florida.
06:36Now we should be hearing that call out for BECO in just about 13 seconds from now.
06:58Side booster separation confirmed.
07:05And there we saw stage separation and you can actually see the view from the main core on the left
07:09and then the two side cores on the right hand side of your screen.
07:14PY boost back startup.
07:16NY boost back startup.
07:19And there's confirmation of the boost back startup on those two side core boosters.
07:23So at this point, both Falcon Heavy side boosters are performing their boost back burns,
07:27which is the first of three burns each side booster will undergo on the way back to Cape Canaveral Space
07:33Force Station.
07:34Now the primary objective of the boost back burn is to quickly reorient the side boosters onto the required return
07:40trajectories.
07:40And this is required in.
