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If Mars Were a Superearth

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For this scenario, we must look at the postercard of the term "superearth"--Kepler-10b.

enter image description here

Its mass is almost 3.5 times greater than Earth, and its diameter 1.4 times wider.

Now let's imagine that Kepler-10b takes the place of the fourth planet, that of Mars.

enter image description here

Mars' mass is 15% that of Earth's, and its diameter is half as wide.

So if Mars were enlarged to the size of Kepler-10b, how would Earth's orbit be affected? Will this super-Mars draw in fragments from the asteroid belt, essentially protecting Earth from asteroidal catastrophe?

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This post was sourced from https://worldbuilding.stackexchange.com/q/34830. It is licensed under CC BY-SA 3.0.

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