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What is the size of Mars compared to Earth?

April 26, 2017Athena earth mars mars exploration rovers mars rovers mer project mission to mars missions to mars size

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What is the size of Mars compared to Earth?

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The diameter of Mars is a little bit bigger than half that of Earth’s. The land area on Mars is almost identical to the land area on Earth, because 70% of the surface area of the Earth is covered by water. The mass of Mars is 11% of Earth’s mass.