Suni Williams and Butch Wilmore were stranded on the ISS since last year. Get the status of their rescue.

In space, microgravity means that astronauts like Sunita Williams and others face obstacles in all their daily routines on ...

To explore and work in space, human beings must take their environment with them because there is no atmospheric pressure and no oxygen to sustain life. Inside the spacecraft, the atmosphere can ...

We might not be alone in the universe - and alien lifeforms could be human-like, suggests new research. Humanity may not be extraordinary but rather the "natural evolutionary outcome" for our ...

If it's just us, seems like an awful waste of space." Before the 1960s, the conditions on the solar system's most promising satellites would have seemed impossible for life. The prevailing belief ...

However, we're only just beginning to understand what long-term life in space can do to human bodies. Much of what scientists are learning comes from NASA's ongoing Twins Study: a research program ...

On Earth, breathing is effortless because oxygen is everywhere. But in space, there is none. Astronauts rely on carefully designed systems to survive. Their lives depend on oxygen supplies and backup ...

when all the components for life should have been available. Project scientist Jason Dworkin at NASA's Goddard Space Flight Center reflected upon this puzzle when he asked "Why was Earth special?" ...