Mars Express view of craters

Back to School with Planet, Week 4 | Mars or Earth? (Medium)

Mars: The Red Planet. Sometimes our nearest neighbor beyond the Moon (switching off with Venus depending on the time of the year). A cold, desolate desert of a planet — currently the only planet in our Solar System inhabited solely by robots.

What could this red world possibly have in common with Earth?

It turns out, quite a lot!

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