Science & Futurism with Isaac Arthur cover image

Journey to Alpha Centauri (Narration Only)

Science & Futurism with Isaac Arthur

00:00

The Cost of a Spaceship That's Never Been Fully Modeled

An Orion nuclear pulse vehicle equipped with 300,000 megaton nuclear devices and massing 500,000 tons would cost about a tenth of the US's current GDP. The best guess for speed is about 3% of light speed and an arrival time around 130 years. Given a few years on global cooperation, we probably could make that happen without bankrupting us.

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