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

The month brings a spectacular lineup of celestial sights—including a rare chance to see Mercury without a telescope and a ...

The lights are expected to be exceptionally vivid this fall into winter; visit these aurora getaways to spot them. This is all on top of myriad other interstellar marvels on the horizon, including ...

Two papers authored by astronomer Beatriz Villarroel claim to show that thousands of “transients” in historic astronomical ...

Researchers poured over historical photographs in search of "transients"—short-lived flashes of light of the night sky.

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 ...