Asperitas clouds are a distinctive, but relatively rare cloud formation that takes the appearance of rippling waves.

Unusual cloud formations—rippled, twisted, and glowing—are appearing more frequently, sparking curiosity and concern. Experts ...

NORMAN, Okla. – Thunderstorms above Oklahoma sculpted a seldom-seen spectacle in the sky Friday morning. The formation of a horseshoe vortex cloud was witnessed in Norman by storm chaser Connor ...

Eos, a newly discovered hydrogen cloud just 300 light-years from Earth, offers a rare look at hidden star-forming regions.

At 300 light-years away, the interstellar cloud is the closest of its kind ever found to Earth and the largest apparent single structure in the sky.

The cloud, composed of either water ice or carbon ... These structures, composed of ice and gas, are located in a region where star formation is rare. Despite early detections dating back to ...

ALMA observations of carbon monoxide emission from 15 protoplanetary disks reveal a stunning variety of gas structures, ...

The discovery of Eos, the closest known molecular cloud to Earth and one of the largest structures in the night sky, hints at ...