Don Pettit, NASA's oldest active astronaut, addressed his eventful return to Earth. Shortly after the spacecraft touched down ...

Is it easier to fall asleep in low gravity?” and other spaceflight questions, answered by two NASA sleep scientists.

Three Chinese astronauts landed back on Earth on Wednesday ... months on China's space station. The crew’s landing module came down slowly after separating from the return vehicle, descending ...

Kosmos 482 was launched in 1972, but will soon make an uncontrolled return to Earth. Here's where the defunct spacecraft may ...

A spacecraft launched by the Soviet Union in 1972 is due to come crashing back into Earth's atmosphere around May 10 and ...

From cosmic radiation to crushing isolation, the journey to Mars presents a web of interlinked dangers. NASA’s Human Research ...

NASA astronauts Anne McClain and Nichole Ayers emerged around 9 a.m. Thursday, May 1 for the fifth-ever all-female spacewalk.

Venera 1 was launched in 1961, only four years after Sputnik 1, the first satellite. Venera 7, in 1970, was the first ...

Observers say proposed cuts to science and other programs undermine increased funding for human space exploration efforts.

A budget proposal released on May 2 includes not only cuts to NASA's science budget, but an early end to its SLS moon rocket.

A budget proposal released on May 2 includes not only cuts to NASA's science budget, but an early end to its SLS moon rocket.

May 11: SpaceX launches NASA’s TRACERS mission. A SpaceX Falcon 9 rocket will carry twin synchronized spacecraft to orbit as ...