An eerie sighting over Washington DC has sparked claims that alien craft are hiding in America's skies.

Shadows may play a much bigger role in the birth of stars than scientists previously understood. A new computer model shows ...

A new study of the oddest cloud on Mars, which reappears every year at the Arsia Mons volcano, says that "exotic physics" is ...

A SpaceX Falcon 9 launch provided a show for people in the eastern U.S. this morning. Basic physics explains the glowing ...

Most studies of how clouds are responding to climate change focus on clouds over the oceans, rather than over mountains.

A rare form of the organic alcohol methanol is present around at least one of the very young stars still embedded within it.

I read Kanako Nishi's "Searching for Clouds."It is an essay in which Nishi, after being diagnosed with cancer, writes about ...

By watching the clouds, they can help predict changes in the weather. Cirrus clouds often indicate a change in the weather is ...

WISE 0855, the coldest brown dwarf known, has patchy water clouds that change thickness as it spins, while gases from deep ...

NASA's James Webb telescope detected shifting water clouds on WISE 0855, a cold brown dwarf, revealing weather and water ...

Learn more about the AMEC, a strange, recurring cloud on Mars that has long baffled scientists, until now.