00:00Today we're going to delve into an incredible story, that of the Pioneer program.
00:04And this isn't just about spaceships; it's the chronicle of how humanity took its very first and most audacious steps.
00:09steps outside the house.
00:10A journey that, well, began with an idea that seemed almost impossible, that of touching the moon, and ended with
00:16a message adrift, traveling towards the stars.
00:19Well, that's the million-dollar question, the one that started it all.
00:23In the late 1950s, space was not only unknown, it was an immense void that was even frightening.
00:30We had no idea what was out there, let alone how to get there.
00:33And the answer, of course, was anything but easy. In fact, it was full of spectacular failures.
00:40So, come on, let's walk this path together. We'll start with those first attempts to reach the moon.
00:46Then we will see how great discoveries were born from failures.
00:50We'll travel to the far reaches of the Solar System. We'll make one last stop on Venus.
00:55And to conclude, we will reflect a little on the legacy that these missions have left forever.
01:00Alright, let's get down to business.
01:02We go back to 1958, in the midst of the space race. Before NASA was the NASA we know today, the
01:10The most audacious goal imaginable was simply to escape Earth's gravity and reach the
01:16Moon.
01:16But of course, saying it is easy. Doing it was a feat of tremendous difficulty.
01:21And from that challenge the Pioneer program was born.
01:24And it's curious because these first missions weren't from NASA, but from the Air Force and the Army.
01:29from the United States.
01:30They had a dual objective. On the one hand, pure and simple exploration. And on the other, to prove their capabilities.
01:35So, they were, well, pioneers in the most literal sense of the word.
01:39And the results are brutally honest. Failure, failure, failure.
01:44Rockets exploding on takeoff. Miscalculations. The list of disasters was long and, frankly, quite disheartening.
01:52But, be warned, amidst all this comes a turning point. The Pioneer 4 arrives.
01:58And although it did not reach the Moon as planned, it achieved something that no American spacecraft had done before.
02:03Reach Earth's escape velocity.
02:05For the first time, we had launched something that was never going to come back.
02:09After those first years of trial and error, the program was put on hold for a while.
02:14But five years later, he returned with a different mindset.
02:17It was no longer just about arriving at a place, but about understanding the space itself.
02:22All the lessons learned from the failures served to build a new generation of probes that, this time, were successful.
02:29much more reliable.
02:30And this diagram makes it perfectly clear.
02:32It went from a single, almost unattainable goal to a much more scientific and, frankly, much more approach.
02:39intelligent.
02:40Instead of aiming for the Moon, the new missions were going to focus on that immense space between the
02:45Earth and Venus to understand the solar wind, magnetic fields, that kind of thing.
02:50And the change of strategy was a complete success.
02:54Between 1965 and 1968, four probes were successfully launched.
02:59The Pioneer 6, 7, 8 and 9.
03:02And what did they do together?
03:04They formed the first network of solar observatories in history.
03:07They were like weather stations in space, giving us real-time data.
03:11In other words, out of five launches, four were a resounding success.
03:16A success rate that was, well, unthinkable just a few years earlier.
03:19With that confidence already gained, the program prepared for its most legendary phase, the most ambitious of all.
03:27The goal was no longer the space we have right here next door.
03:30Now it was time to go beyond Mars, to the outer solar system.
03:35Nobody had ever been there.
03:37Nobody even knew if it was possible.
03:39And here, of course, the two big stars of the show come into play.
03:43The Pioneer 10 and 11.
03:45Their mission was truly insane for the time.
03:49First, they had to survive the asteroid belt.
03:51An area that many scientists thought was a deadly barrier.
03:55And if they succeeded, they would be the first to visit the gas giants, Jupiter and Saturn.
04:00Just two spacecraft, two small probes that were going to completely rewrite the astronomy books
04:05And they were going to give us the first close-up images of the largest planets in our solar system.
04:09And most importantly, everything that came after, Voyager, Galileo, Cassini, everything, absolutely everything, started here.
04:16Pioneer 10 departed in 1972.
04:19Not only was she the first to cross the asteroid belt and survive,
04:23But when it reached Jupiter, it sent us images that left the whole world speechless.
04:28We saw its great red patch, its bands of clouds, its enormous size.
04:33Jupiter ceased to be a point of light in the sky and became a real, living place.
04:38And a year later, its twin, the Pioneer 11, followed, but with an even more ingenious plan.
04:45He used Jupiter's gravity as if it were a cosmic slingshot.
04:50This technique, gravity assist, changed the rules of the game.
04:54As the ship passes nearby, it steals a little bit of energy from the planet to propel itself for free.
04:59And thanks to that push, in 1979, humanity saw Saturn's rings up close for the first time.
05:07A marvel!
05:08After the huge success in the outer solar system, one would think that the program had already reached its peak.
05:13But no, there was still one last chapter.
05:16The Pioneer program turned its gaze inward,
05:20towards the most hostile and mysterious planet in our neighborhood, Venus.
05:23In 1978, a double mission was launched, Pioneer 12 and 13.
05:29It was, so to speak, a coordinated attack.
05:32One spacecraft remained in orbit, mapping the surface with radar.
05:36The other, a multi-probe, released four small capsules that plunged into that dense and corrosive atmosphere.
05:43sending data until, well, they were destroyed by pressure and heat.
05:46It was the most comprehensive study of Venus to date.
05:49And so we come to the end of the journey, but as I said before, not to the end of the story.
05:54Because after completing their missions, Pioneer 10 and 11 did not stop.
05:59They continued traveling, always outwards, moving away from the Sun, towards interstellar space.
06:04And no, they didn't leave empty-handed.
06:06A plaque was placed on board the two ships, a very famous aluminum and gold plaque.
06:11It carried a message in the form of drawings, designed by people like Carl Sagan and Frank Drake.
06:16It included the figure of a man and a woman, a star map so they would know where we were, and a diagram.
06:22of a hydrogen atom.
06:23It's basically a business card.
06:26A message that says, hello, we exist, this is who we are, and we live here.
06:30Their final destination is a one-way trip.
06:32They became the first objects we have created capable of leaving the Solar System.
06:38Right now, as we speak, they are still out there, on their silent journey through the void, farther and farther away.
06:44They are like ghosts from a heroic age of exploration.
06:47And this leaves us with one final thought.
06:50That plate traveling into the unknown, what is it really?
06:54Is it a greeting, an optimistic message in a cosmic bottle, or perhaps a solitary warning?
07:00The silent cry of a species that looks to the stars, aware of how small and alone it is in
07:05the universe.
07:06The answer, I suppose, floats silently and out there, alongside them.
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