Why Are There No Impact Craters on the Surface of Io

question 63

Multiple Choice

Why are there no impact craters on the surface of Io?

• A)It is too small to have been bombarded by planetesimals in the early solar system.
• B)Jupiter's strong gravity attracted the planetesimals more strongly than Io and thus none landed on its surface.
• C)Io did have impact craters but they have all been buried in lava flows.
• D)Any craters that existed have been eroded through the strong winds on Io's surface.
• E)Io's thick atmosphere obscures the view of the craters.

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