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Home Q & A Board Science-Related Homework Help Physics
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staedtler staedtler
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7 years ago
What evidence is there for the proposal that at least parts of the Martian surface are very old?

(a)   The observations of abundant craters in the southern hemisphere, which are so numerous that they must date back at least 3 billion years.
(b)   The observation of polar icecaps on Mars, which probably formed from outgassing water as Mars was being formed, at least 4 billion years ago.
(c)   The observation of giant volcanoes which, at the estimated rate of lava flow, would have needed at least 2-3 billion years to grow to their present size.
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Discovering the Universe

Discovering the Universe


Edition: 7th
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papachulopapachulo
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7 years ago
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staedtler Author
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7 years ago
On behalf of my study group and I, thank you
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