What do we conclude if a planet has few impact craters of any size?
What do we conclude if a planet has few impact craters of any size?
The planet was never bombarded by asteroids or comets.
Its atmosphere stopped impactors of all sizes.
Other geological processes have wiped out craters.
Since all planets must form from the accretion process, which is rather messy and involves being impacted by asteroids and comets, that cannot be correct.
If you can see the surface of the planet with an atmosphere, it isn’t thick enough to stop every impactor. So thats incorrect.
Obviously, like earth, geological processes, usually running water and gravity, or plate tectonics for the really big features, is the correct answer.
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