The rare arcus cloud, which is very similar to a tsunami, was seen by beachgoers who looked on as the sky turned dark and ominous from the huge, rolling cloud that was seen for miles ...

This is the dramatic moment a scud cloud resembled a tornado as it loomed over Georgia. Footage captured by Mark Shavin shows ...

The ancient history of Earth has always been hard to read. Most of the planet’s earliest crust has been lost, buried, or melted by geologic processes over billions of years.

The extraordinary event temporarily shut down equipment at the ALMA Observatory, and the snow reached the telescope's main ...

The dark, tsunami-like cloud formation billowed across parts of Portugal’s northern and central coasts, as the country set a ...

A rare roll cloud was seen passing over several beaches in Portugal on Sunday, June 29. The phenomenon features a cloud that ...

Paul Miller captured video of the funnel cloud over Lake Erie, showing the thin column of rotating air stretching from to the ...

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

A new observatory in Chile has produced a stunningly detailed image of a nebula resembling cotton candy, using the largest ...