Some of the mysterious grooves on the surface of Mars' moon Phobos are the result of debris ejected by impacts eventually falling back onto the surface to form linear chains of craters, according to a new study.
Monotony was the hardest part of a yearlong NASA experiment about the mental and psychological rigors of longterm spaceflight, crew members said after the test ended.
NASA's Juno mission successfully executed its first of 36 orbital flybys of Jupiter today. The time of closest approach with the gas-giant world was 6:44 a.m. PDT (9:44 a.m. EDT, 13:44 UTC) when Juno passed about 2,600 miles ...
Our galaxy is home to a bewildering variety of Jupiter-like worlds: hot ones, cold ones, giant versions of our own giant, pint-sized pretenders only half as big around.
Six scientists have completed a yearlong Mars simulation in Hawaii, where they lived in a dome in near isolation.
SpaceX's unmanned Dragon cargo ship splashed down Friday in the Pacific Ocean, returning a load of NASA research from the International Space Station, the US space agency said.
A SpaceX Dragon capsule headed back to Earth on Friday with a load of science experiments and gear from the International Space Station.
This Saturday at 5:51 a.m. PDT, (8:51 a.m. EDT, 12:51 UTC) NASA's Juno spacecraft will get closer to the cloud tops of Jupiter than at any other time during its prime mission. At the moment of closest approach, Juno will ...
In unprecedented observations made earlier this year, Rosetta unexpectedly captured a dramatic comet outburst that may have been triggered by a landslide.