Sprites “are transient luminous events” that “are triggered by intense electrical activity in the thunderstorms,” astronaut Nichole Ayers said ...

A mysterious cloud feature in Atlanta may have fooled people into thinking they were seeing a tornado. Here's an explanation ...

A “roll cloud” spotted off the coast of Portugal looked like something out of a movie. Here’s the science behind it.

Dustin’s: Clouds build in today with rain late; Rain from tropical depression Sunday Coastal rain set to spread Sunday-Monday ...

A new result from the molecular gas survey in the Southern Pinwheel Galaxy M83 using the Atacama Large ...

Portland will see a partly sunny day Friday with high temps reaching about 77 degrees. The evening will see continued mixed ...

Early Tuesday morning, a delicate, wispy cloud type rarely seen formed over western Montana, lighting up the pre-dawn sky.

Meteorologist Kelly Ann Cicalese is tracking more clouds mixing in with the sun today ahead of a strong surge of heat and ...

So often, the Fourth of July and the entire holiday weekend around it has heat, humidity and thunderstorm chances that make ...

NASA Odyssey orbiter snapped a first-ever image of a Mars volcano peeking above some clouds before dawn. It’s twice as tall as Earth’s largest volcano ...

Researchers have documented many spectacular effects of the underwater eruption of Hunga Tonga–Hunga Ha‘apai, such as the ...