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

This is the breathtaking moment an adorable cloud formation appeared above the road in North Sulawesi, Indonesia. The footage ...

At these heights, the atmosphere is cold enough that clouds are typically composed of ice crystals, not water droplets. These clouds often look thin, wispy, and delicate—but they can provide valuable ...

At just 300 light-years away, it’s one of the closest large gas clouds ever detected near Earth, and takes up as much sky as ...