When volcanic eruptions send towering plumes of ash into the atmosphere, they don’t just darken the sky or affect local air ...

Astrophysicists have gained precious new insights into how distant exoplanets form and what their atmospheres can look like, ...

Trillions of bacteria, fungi, viruses and single-celled organisms travel the globe high in the atmosphere. Scientists are ...

Weather officials say different types of clouds can tell you what kind of weather to expect. Here's a look at the different ...

A Martian volcano, Arsia Mons, rises above the clouds in a newly released panoramic image captured by the Mars Odyssey ...

Climate models are essential tools for understanding our planet's future, helping scientists predict global warming patterns, ...

Mars Odyssey orbiter has delivered a stunning new panorama of the Red Planet, revealing the colossal Arsia Mons volcano ...

NASA wants your photos of a specific type of cloud in order to better understand Earth’s atmosphere. This summer, NASA is inviting skywatchers to participate in a citizen science project called Space ...

Cloud formations are a key indicator of atmospheric conditions, and flat clouds with fluffy tops are especially telling.

Mars Odyssey orbiter has captured a breathtaking new view of the massive volcano Arsia Mons rising through morning ice clouds ...

Massive clouds of the Sahara Desert dust are moving over the Atlantic toward Central and North America, with the possibility of reaching Florida and other states, including Texas, this week.  The ...