What colour is space? © Getty Images

What colour is space?

Asked by: Jason Webb, Tennessee

If we add up all the light coming from galaxies (and the stars within them), and from all the clouds of gas and dust in the Universe, we’d end up with a colour very close to white, but actually a little bit ‘beige’. Averaged over the whole sky, however, this beige colour is diluted and appears almost, but not quite, black.

Advertisement

Given the immense size of the Universe, and the abundance of stars, it might be surprising that the sky isn’t bright white. This is because the Universe has a finite age, and the light from the furthest stars hasn’t had time to reach us yet.

Read more:

Advertisement