Studies of medaka fish raised on the International Space Station shed light on how bone responds to sustained exposure to microgravity.
Russian cosmonaut Gennady Padalka returned safely to Earth with two other astronauts from the International Space Station Saturday with the record for having spent the most time in space.
Prometheus and Pandora are almost hidden in Saturn's rings in this image.
Bugs are winning out, and that's a good thing according to NASA's Human Research Program. As part of NASA's One-Year Mission, researchers are studying how microbes living on astronauts' skin, inside their bodies and on the ...
Some of the dark sandstone in an area being explored by NASA's Curiosity Mars rover shows texture and inclined bedding structures characteristic of deposits that formed as sand dunes, then were cemented into rock.
The commercial space race got a little more crowded Tuesday when the aerospace company Blue Origin, headed by Amazon.com founder Jeff Bezos, said it will begin launching from Cape Canaveral, Florida, later this decade.
The brightest spots on the dwarf planet Ceres gleam with mystery in new views delivered by NASA's Dawn spacecraft. These closest-yet views of Occator crater, with a resolution of 450 feet (140 meters) per pixel, give scientists ...