Topopolis: The Eternal River Space Habitat

Topopolis: The Eternal River Space Habitat

Imagine a world stretched along a single, endless river inside a colossal space megastructure. Explore the fascinating concept of the Topopolis, a futuristic habitat billions of miles long, where humanity might thrive in a sprawling civilization bound by physics,...

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Megastructures: Hollow Earth

Megastructures: Hollow Earth

Use code isaacarthur at the link below to get an exclusive 60% off an annual Incogni plan: https://incogni.com/isaacarthur Earth is immense, but we only live on a thin shell of its surface. So what if we built a planet with only that thin shell, or with several layers...

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Cylindrical Planets

Cylindrical Planets

A planet shaped like a cylinder might be built as novel alternative to a spherical or flat discworld. Join this channel to get access to perks: https://www.youtube.com/channel/UCZFipeZtQM5CKUjx6grh54g/join Visit our Website: http://www.isaacarthur.net Join Nebula:...

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Chandelier Cities

Chandelier Cities

While we sometimes imagine vast structures rising above the sky, it is possible to have equally vast structures hang down from the sky, and on world's whose atmospheres are far larger than earth's, this may be where people choose to live. Graphics: Jeremy Jozwik,...

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Alderson Disks

Alderson Disks

The Alderson Disk is a popular but impractical megastructure that seeks to build an enormous flat planet with a Sun at its center, as an alternative to a Dyson Sphere. Produced, Written & Narrated by: Isaac Arthur Music Courtesy of Epidemic Sound...

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Tethered Ring Space Launchers

Tethered Ring Space Launchers

Visit https://brilliant.org/isaacarthur/ to get started learning STEM for free, and the first 200 people will get 20% off their annual premium subscription. To get into space in a big way we need to be able to move vast amounts of people and cargo to space at a...

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The Megastructure Compendium

The Megastructure Compendium

Sign up for a Curiosity Stream subscription and also get a free Nebula subscription (the streaming platform built by creators) here: https://curiositystream.com/isaacarthur In the future humanity may build enormous structures, feats of mega-engineering that may rival...

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Tips from Kardashev 2 Engineers, part 2

Tips from Kardashev 2 Engineers, part 2

Part 2 of our look at mega-engineering projects civilizations may tackle on their way to achieving Kardashev 2 status. Teaming up again with Fraser Cain & Universe Today, we look at artificial magnetospheres, mining and disassembling comets, asteroids, and even...

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Weather Control and Geoengineering

Weather Control and Geoengineering

A look at advanced means of altering or controlling the planet's climate and geography, drawing on concepts proposed for terraforming other planets. We look at existing and proposed ideas of controlling the weather, creating artificial islands or mountain ranges,...

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