Britons living in the European Union may lose the right to live in another EU country after Brexit. Is this fair?
11 July 2017, 15:47
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.
How does the Sun heat up Earth when space is freezing cold? David, Hampstead
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.