If you looked up to the sky here last Saturday evening you might have briefly thought Thanos was about to snap his fingers or ...

Curious about whether the clouds you see mean sunny skies, roaring storms or a stunning sunset? Here’s your guide to the ...

Skywatchers worldwide are in for a charming cosmic display before the sun rises next week as three celestial bodies will ...

Solar eruptions created a northern lights display in North America and Europe overnight, with more auroras expected through Thursday.

Pink and red hues could light up the Bay Area sky Wednesday as scattered clouds provide ideal ingredients for a colorful sunrise and sunset. A meandering low-pressure system off the Central Coast will ...

One of two main craters on Alaska’s Mount Spurr, shown in 1991. Earthquake activity suggests the volcano is close to erupting again in 2025. R.G. McGimsey/Alaska Volcano Observatory/U.S. Geological ...