The light pollution in these areas makes the entire sky appear light grey in colour, and the Milky Way is effectively invisible. A 2016 study estimated that even on the clearest night, one third ...

However, we never see colours like black, white or grey in rainbows. According to a report published in Science Report, "but there are two colours we would never see in a rainbow - black and white.

Most of us can’t see the Milky Way – this dark sky atlas shows you where you can. by Alan Boyle on June 10, 2016 at 10:59 am June 10, 2016 at 11:30 am ...

It's pretty well-known that most clouds are white, while rain clouds are usually a darker shade of gray. But why are rain clouds so dark? Let's start by discussing how clouds form. The air around ...

Editorial: “Black-hole eruption nearby is a warning for us all“ Some 2 million years ago, around the time our ancestors were learning to walk upright, a light appeared in the night sky ...