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- # Gravity wells
- #
- # https://xkcd.com/681/
- fn depth(mass: Mass, radius: Length) -> Length =
- G × mass / (g0 × radius) -> km
- let earth_mass = 5.972e24 kg
- let earth_radius = 6371 km
- let moon_mass = 7.342e22 kg
- let moon_radius = 1737 km
- assert_eq(depth(earth_mass, earth_radius), 6379 km, 1 km)
- assert_eq(depth(moon_mass, moon_radius), 288 km, 1 km)
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