Moments after Artemis II splashed down in the Pacific Ocean off the coast of California, ending its 10-day journey to the ...

NASA confirms that Mars has air, but its composition and extremely low pressure raise a far more serious question: could a ...

A nearby Earth-sized planet offers a rare chance to study how atmospheres survive or disappear on rocky worlds.

Stand on the surface of Mars without a spacesuit and you would lose consciousness in roughly 15 seconds. Not because of the ...

On its 36th anniversary, NASA's Hubble Space Telescope revisits the Trifid Nebula, providing new insights on a familiar ...

A heavily modified Boeing 777 -200ER formerly operated by Japan Air Lines will soon become NASA's largest flying science ...

A fungus pulled from NASA cleanrooms kept surviving tests that were meant to mimic nearly every stage of a trip to Mars. That ...

Researchers identified a species that can survive radiation, extreme heat and simulated Martian soil, posing a new challenge ...

Astronauts and robotic spacecraft have captured breathtaking photos of Earth from space for decades. See the best images.

Cirrus-like clouds have been discovered on a giant planet 12 light-years away, a finding that could change the search for ...

A distant Jupiter-like planet has revealed an unexpected secret: water-ice clouds hiding in its atmosphere. The discovery, made with JWST, shows these alien worlds are more complex than scientists ...

Contrails are created when airplanes fly in cold and humid atmospheric conditions and ice crystals form around the particles ...