Spring can be a particularly gloomy time of the year in parts ... The floating mass of water vapor you see in the sky — a cloud — forms when rising air parcels cool and the water vapor within them ...

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

A week that begins with clouds and showers blossoms into a stretch of sunlit days, as spring sheds its gray for golden warmth ...

Starting high in the Northern Hemisphere sky, I’ll be highlighting lots of stuff over the coming weeks and months. I’m going ...

Researchers estimate that the molecular cloud is equivalent to the size of 40 moons lined up across the sky, with a mass ...

Spring can be a particularly gloomy time of ... The floating mass of water vapor you see in the sky — a cloud — forms when rising air parcels cool and the water vapor within them condenses ...