Stargazers in parts of Europe were stunned by an unusual sight on Monday evening: a large, glowing blue spiral in the sky.

You know that beautiful, clear blue sky over Rochester? It’s always a welcome sight—when it happens. But have you ever noticed the thin white streaks that sometimes crisscross the sky? Many people ...

A total lunar eclipse — the first since November 2022 — will grace the night sky in just a few weeks ... in Central Texas last year knows that clouds are the biggest enemy.

Sunset tonight will feature mostly clear skies with only a few fair weather clouds. No more than about 20% of the sky will ...