Asked by: Theresa Brooks, Cumbria
There are over 1,400 satellites orbiting over us, plus thousands of pieces of space junk that might survive entry through the Earth’s atmosphere. But the chances of being hit are extremely low.
Most of the Earth is covered by sea, and the majority of land is uninhabited. All told, the European Space Agency puts the lifetime risk of being hit at less than a billion to one.
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Authors
Robert is a science writer and visiting professor of science at Aston University. He likes maths, West End musicals and hamsters.
