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Real Engineering 20 Sep 2025 25 here now

Earth to Mars in 10 Days

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Comments (20)

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ironically this is the most noble use of our nuclear weapons i can think of, would give us easy access to the solar system and potentially allow us to go to other star systems much more easily than other emerging technologies.
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If this ever becomes a reality, just imagine the nightmare of maintenance and early disasters. So many moving parts to go wrong, but still, would be an engineering marvel if perfected.
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Kubrick loved the idea of Orion, but, cinematically, he thought it might be too comical seeing it putt-putting away. He went for a more "conventional" gas-core fission/hydrogen thermal design (this came from Fred Ordway's notes), then never showed it in operation! He did pay homage to Orion though by using the name for the Earth-station shuttle.
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@FlyLeah From YouTube ↗ 21 Oct 2025 69
"Help Orion get to space"

Maybe this is the job the Sea Dragon was waiting for
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@LeeFall From YouTube ↗ 21 Sep 2025 11
2:18 Why did Lou Allen have to lose his balls?
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@akifunmc From YouTube ↗ 21 Sep 2025 40
Can’t be a nuclear energy video without Graphite! 🗿3:20
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Absolutely incredible video, the 3D models are stunning
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@ggtt2547 From YouTube ↗ 21 Sep 2025 345
20:53 in the 1500s it took more than a year to reach India from Portugal and get back again. And still, whole empires sprawled with that level of communication times! Amazing!
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@MercerWing1 From YouTube ↗ 21 Sep 2025 590
Saw this in ksp2 trailers, rip game
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@Nemoticon From YouTube ↗ 21 Sep 2025 205
The project should be re-visited... a lot has changed since the 1950-60s in technology, understanding and application and the fundamental concept is still a brilliant idea.
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@KillmanPit From YouTube ↗ 21 Sep 2025 482
Setting area the size of France on fire just by detonation in space is absolutely horrifying idea. I'd love to see this implemented in a video game though.
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Honestly, vessels like the Orion should be build in space. And then we could launch logistics rockets to the orion to fill it up with the fuel pellets.
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Suddenly Sea Dragon seems like a sensible, environmentally-sound idea.
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Nuclear has two faces, a fantastic technology with a bright future to push humanity to greater heights. And a god level power to level civilization to extinction.
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@keilerbie7469 From YouTube ↗ 21 Sep 2025 2000
Yours is actually the first correct animation of the Orion pusher plate I've seen on Youtube; most channels just have the big pistons as the only shock damper and forget the secondary layer to the pusher plate itself.
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@alexlandherr From YouTube ↗ 21 Sep 2025 2500
xkcd really had a point about if you zone out long enough any discussion eventually leads to Project Orion…
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@ZarHakkar From YouTube ↗ 21 Sep 2025 298
"Show me Project Orion."
"The real Project Orion."
"..."
"Perfection."
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Forget about nuclear propulsion. The real innovation here is NASA making a reliable drum magazine.
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@BigOaern From YouTube ↗ 21 Sep 2025 5100
"One 4000 ton Orion launch would match the total mass lifted into orbit by all of the Apollo launches". This 'interplanetary' ship had a mass of 4000t, a LEO payload of 1600t, and a moon payload of 1200t. A Saturn V weighed in at 3350t, has a LEO payload of 130t, and a moon payload of 2t. With 13 total Saturn V launches, the total theoretical payloads would be 1690t to LEO and 26t to the moon. It would take 600 Saturn V moon launches to match the payload delivery potential of one single interplanetary Orion ship. That, ladies and gentleman, is bananas.
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@tommo464 From YouTube ↗ 21 Sep 2025 4200
That manhole cover ran so project Orion could fly 😂