Science & Futurism with Isaac Arthur cover image

Life on Giant Moons (Narration Only)

Science & Futurism with Isaac Arthur

00:00

The Moon's Orbital Period

We are told Endor has a diameter of 4900 kilometers, barely a third of Earth's. A Jovian that is 9 or 16 times more massive than Jupiter seems entirely plausible. Io would orbit those at a third or a quarter of its current rate - 14 or 10 hours. The 24-hour day length is more viable as a probable Earth-like exomean but most the only around brown dwarfs. That potentially leads to the question of what you call a body orbiting a failed star.

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