Orbital Farms: Sustaining Life Across the Solar Frontier (Narration Only)

Science & Futurism with Isaac Arthur

Isaac Arthur

Spacecraft, Scifi, Engineering, Interstellar Travel, Civilizaiton, Space Station, Future, Future Philosophy, Artificial Intelligence, Technological Future, Cybernetics, Human Civilizaiton, Sci Fi, Space Megastructures, Astronomy, Megastructures, Energy Abundance, Physics, Space, Space Infrastructure, Technology, Futurism, Genetics, Starship, Post Scarcity, Transhumanism, Long Term Future, Space Colonization, Spaceship, Future Of Humanity, Space Industry, Science

4.9 • 781 Ratings

🗓️ 27 November 2025

⏱️ 34 minutes

🔗️ Recording | iTunes | RSS

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Summary

As humanity expands into space, we’ll need new ways to grow food. Explore how orbital farms could sustain billions—on Earth, Mars, and beyond.

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Credits:

Orbital Farms - Extended Edition

Episode 471a; November 1, 2024

Produced, Narrated & Written: Isaac Arthur

Graphics:

Jarred Eagley

Jeremy Jozwik

Katie Byrne

Ken York YD Visual

Udo Schroeter

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Music Courtesy of Epidemic Sound http://epidemicsound.com/creator

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Transcript

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0:00.0	Hello, SFIA audio listeners. In this month's Nebula exclusive, Big Alien Theory,
0:05.0	we're asked at the reason alien civilizations might be rare is because most aliens are huge.
0:10.6	To hear it and every episode early and add free, plus hours of bonus content, check
0:15.2	out go.nebola.tv slash Isaac Arthur and use my code, Isaac Arthur. In the future, many people will live and work in
0:23.9	space, and in order to feed them, some may work as orbital farmers, but it may also become how we
0:29.7	feed earthlings, too. Farming in space is a popular idea, albeit normally in science fiction it is on some alien planet,
0:39.4	but there might be a lot of occasions where it makes more sense to do your farming in orbit.
0:44.4	That's mostly for feeding out the people in orbiting space stations and visiting spaceships,
0:49.3	but as we'll see today, there are some scenarios where farming in space and bringing it down to a planet,
0:54.8	even to Earth, might make sense and be economical. We also tend to assume in more distant
1:00.7	times that more folks will live in space than on planets. That may be, and if so, they need
1:06.2	to be fed. And whether you're shipping it down to a planet or to other space habitats, it probably
1:11.2	doesn't affect the basic process and design too much. Though if we imagine settling a planet
1:16.3	in another solar system that was more in the Martian temperature zone, we could also imagine
1:20.6	an orbital farm that was in a very eccentric orbit around that planet to bring it closer to
1:24.9	their sun for most of its period. Alternatively, you might have a big orbital farm on a cycler orbit between a planet
1:31.9	and its moons that was coming there to pick up raw materials, or between two moons.
1:37.3	A cycler orbital farm moving between Jupiter's volcanic moon Io and icy moon Europa could
1:43.3	easily be drying fuel and raw materials
1:45.7	from both moons, and reliably swinging into position of one or the other every four days
1:50.6	or so, especially with a powered cycle or able to give some delta V for pickup and drop-off,
1:57.0	and the same would be true of other moons there, albeit with longer timelines.
	...

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