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 ...

Find out what's up in your night sky during November 2025 and how to see it in this Space.com stargazing guide.

Have you ever wondered why the night sky is dark? Doesn’t seem like much of a brainteaser, does it? Everyone knows the sky darkens at night because the sun sets … or more accurately, because our part ...

Bring a red light and snacks and get comfortable as you take in these celestial wonders. April 21 - 28 is International Dark Sky Week, a global celebration of the night sky during which like-minded ...

This striking satellite photo shows 10 swirling "dark voids" that appeared above an uninhabited volcanic island in the Indian Ocean. The black spots are the result of atmospheric cloud vortices, but ...