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08-Aug-2017 14:19

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When it comes to the surfaces of Earth and Mars, things once again become a case of contrasts.

Naturally, it is the differences that are most apparent when comparing Blue Earth to the Red Planet – as the nicknames would suggest.

Mars, meanwhile, has a radius of approximately 3,396 km at its equator (3,376 km at its polar regions), which is the equivalent of roughly 0.53 Earths.

However, it’s mass is just 6.4185 x 10²³ kg, which is around 10.7% that of Earth’s., which works out 1,083 billion cubic kilometers.

The crust, meanwhile, averages about 50 km (31 mi) in thickness, with a maximum of 125 km (78 mi).

This makes it about three times as hick as Earth’s crust, relative to the sizes of the two planets.

But as human satellites and rovers began to conduct flybys and surveys of the planet, this vision of Mars quickly dissolved, replaced by one in which the Red Planet was a cold, desiccated and lifeless world.

However, over the past few decades, scientists have come to learn a great deal about the history of Mars that has altered this view as well.

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And while they are both differentiated between a metallic core and layers of less dense material, there is some variance in terms of how proportionately thick their respective layers are.Earth and Mars are similar when it comes to their basic makeups, given that they are both terrestrial planets.