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Isaac Arthur

Isaac Arthur creates Science & Futurism with Isaac Arthur, exploring space settlement, alien civilizations and humanity’s future through science and engineering.

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Isaac’s happenings, collected from public sources, plus his backstory and Starbook, where fans write.

Isaac Arthur Nov 3

Could the Moon crash into Earth?

Isaac shared a short explainer asking whether the Moon could ever collide with Earth.

isaacarthur.netCould the Moon Ever Crash Into Earth?

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Isaac Arthur Nov 1

Defending a space colony

Isaac released an episode on protecting future settlements from attack, sabotage, accidents and siege, including the risks posed by everyday space infrastructure.

isaacarthur.netBeyond Space Defense: War, Sabotage & Survival Beyond Earth

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Isaac Arthur Oct 29

Would nuclear war end civilization?

A new SFIA episode examines nuclear weapons, fallout and what might happen to civilization after a strike.

isaacarthur.netNuclear War Myths: Would Civilization Really End?

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Isaac Arthur Oct 27

Why nuclear fallout fades

Isaac shared a short explainer on why the most intense radiation from nuclear fallout drops rapidly after a detonation.

isaacarthur.netWhy Nuclear Fallout Fades So Fast

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Isaac Arthur Oct 25

Could civilizations keep starting over?

He returned to the Fermi Paradox with an episode about repeated collapse, lost knowledge and isolated colonies, asking whether these cycles could help explain the silence of the galaxy.