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When the first human visitors step foot on the surface of Mars, they are immediately going to notice that the gravity on Mars is much lower than they are used to on Earth. In fact, the gravity on Mars is only 38% the gravity on Earth. In other words, if you weigh 100 kg (220 pounds) on Earth, you would only weigh 38 kg (83 pounds) on Mars.

So why is the gravity on Mars so low? People imagine that Mars is like a twin of the Earth, but it’s actually much smaller. The diameter of Mars is only 6,800 km across – roughly half the size of the Earth.

This small size and a relatively low density means that Mars has 10% the mass of the Earth. And so, anyone down at the surface of Mars experiences this lower gravity.

Just imagine what you could do with your Earth strength in the lower Mars gravity. You could throw balls twice as high and far, and you could jump 3 times as high.