When the sun is straight up at noon, you see blue sky because all the other colors in the spectrum up until blue and purple are scattered away. This is known as the Rayleigh effect. We usually don't ...

The view line on SWPC's dashboard map shows people in up to 14 states could see the northern lights, or aurora borealis, ...

Interstellar comet 3I/ATLAS shocks scientists with thruster-like jets and a vivid blue glow, fuelling debate over its ...

When is November's full moon? Find out the dates of the full moon, the best time to see it and why it is the brightest one of ...