How Does The Sun Heat Up The Earth When The Space In-between Is Freezing Cold?

11 July 2017, 15:47

Sun and Earth
Sun and Earth. Picture: Google Images

James O'Brien is asked how the Earth is warmed by the Sun when the space between is so cold. A physicist tells us the answer.

Question

How does the Sun heat up Earth when space is freezing cold? David, Hampstead

Answer

Name: Professor Martin, Manor Park

Qualification: retired physicist

Answer: Heat does travel through the vacuum of space but inconspicuously; it gets absorbed when it lands on something. In a vacuum where there is nothing for it to land on it would seem freezing, but if you put something in its way it will heat up.

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