Ep. 626: Terrestrial Planets - Mercury, Venus, Earth & Mars
Astronomy Cast
00:00
What Killed Mars?
The sun and lack of gravity, just, and lack of a magnetic field that made the sun's effects greater. If hydrogen or helium is released into our atmosphere, it's gone very quickly. And here on earth, the reason we lose hydrogen helium so fast as it'll get hit by a oxygen molecule,. The transfer of momentum sends it away at escape velocities.
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Transcript
