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Astrum Space

The Final Images We Will Ever See of Pluto and Arrokoth

25 Feb 2025

Description

Astrum explores everything NASA's New Horizons saw and discovered in the Kuiper Belt around Pluto, Charon and Arrokoth (Ultima Thule).Discover our full back catalogue of hundreds of videos on YouTube: https://www.youtube.com/@astrumspaceFor early access videos, bonus content, and to support the channel, join us on Patreon: https://astrumspace.info/4ayJJuZ

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Transcription

Full Episode

0.71 - 21.527 Alex McColgan

In 2015, there was a huge excitement in the space community. That is because up until then, the best image we had of the Pluto system was this. Hubble also squinted its lens at Pluto, but it is so small and distant, the best it could see was a few blobs of colour variation. But in 2015, this all changed.

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24.346 - 50.974 Alex McColgan

That is because, after a 9 year journey, the New Horizons space probe flew by the dwarf planet, giving us a detail and fidelity of Pluto and its moons like we had never seen before. So the question is, what did the New Horizons probe see and discover during its flyby of the Pluto system, and what has it been doing since the flyby? I'm Alex McColgan and you're watching Astrum.

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51.435 - 73.506 Alex McColgan

Stick with me in this video and I will show you all the highlights from the New Horizons mission to the Pluto system and beyond. Let's first of all give you a quick bit of context in case you are new to Pluto or it's been a while since you last heard about it. Pluto is a remarkably pretty, tiny world, much smaller than our moon.

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74.287 - 94.585 Alex McColgan

It's found in the Kuiper Belt, a dispersed belt of asteroid or comet-type objects beyond the orbit of Neptune. Pluto was the last of the traditional nine planets to be explored. This was due to its distance from us, but also because, can you believe this, it wasn't considered a very interesting celestial object.

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95.595 - 107.158 Alex McColgan

Thankfully, the team behind the probe pushed hard for this mission to be approved, and in 2006, New Horizons was launched as part of NASA's New Frontier program for medium budget space missions.

108.678 - 130.08 Alex McColgan

The goal of the mission was to get to Pluto as soon as possible, and as such, New Horizons was the fastest launch ever, it being a light spacecraft on the most powerful rocket available at the time, a fully boosted Atlas V. It whizzed past the Moon in only 9 hours. The Apollo missions took 10 times as long.

131.421 - 153.014 Alex McColgan

On its way to Pluto, it used Jupiter as a gravity assist, which shaved 3 years off the arrival time. It also used Jupiter as a trial run for its systems, taking some remarkable videos and images of the planet and its moons. After this successful trial, New Horizons went into hibernation mode to prevent the wear and tear of its instruments.

154.195 - 176.154 Alex McColgan

Leading up to its approach in 2015, the team turned the systems back online, and every day the spacecraft sent back images of the Pluto system. This was an incredibly exciting time for enthusiasts following the story. We began to get hints of what Pluto could possibly look like, and saw how different Pluto was from its biggest moon, Charon.

177.475 - 204.076 Alex McColgan

Every day the resolution got higher and higher, and more details could be made out. Yes, there were other scientific goals for the mission, but the most interesting thing to me was what it looked like. Soon there could be seen what looked to be a heart shape on the dwarf planet. On the 14th of July, the New Horizons probe made its closest approach. at only 12,500km from the surface of Pluto.

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