NASA

Welcome to ’Day One of the Mars era’

A groundbreaking genetic study of twin NASA astronauts Mark and Scott Kelly may teach us as much about the human body as about space

The two winners have won contracts to deliver U.S. astronauts to the International Space Station starting in 2017

NASA tests, the renovation of the Bluenose II, and the perils of binge-watching

Mars used to look like cottage country. This year, we may find out what turned it into a barren wasteland.

In 2012, Hadfield was denied medical clearance to go to space. He recounts the politics and the chaos that followed.

’The secrecy and paternalism really bothered me’

Canada aims for the moon, and more scandal in the Senate

Karen Nelson, an archivist at Lawrence Berkeley National Laboratory in Berkeley, Calif., was sorting through artifacts recently...

He saw space and Earth as if they were brand-new and shared his experience aboard the ISS with millions