If Earth had no atmosphere like the Moon there would be no scattering, and the sky would remain black, even in daylight ...

It might seem like a simple question. But the science behind a blue sky isn't that easy. For starters, it involves something ...

Often when an artist uses colour in a painting they are trying to communicate an emotion, mood or atmosphere. They could either be trying to make a viewer feel a certain way or they are trying to ...

On a bright, clear day, the sky stretches above us in a brilliant shade of blue. But have you ever wondered why? The answer lies in a fascinating phenomenon known as Rayleigh scattering ...