There are many obstacles to overcome before humans can set foot on Mars, including problems surrounding launch mass and ...

Astronauts Butch Wilmore and Suni Williams are conducting a spacewalk outside the International Space Station to remove ...

A unique polling booth in Delhi, themed 'Chandrayan se chunav tak Bharat ki udaan,' features models of Chandrayaan and PSLV ...

NASA astronauts Suni Williams and Butch Wilmore completed a spacewalk Thursday while awaiting their delayed return to Earth.

The four American astronauts aboard the ISS, including the Boeing Starliner crew, spoke to USA TODAY in an exclusive ...

Starliner co-pilot Sunita Williams is now the world's most experienced female spacewalker, moving up to number four overall.

While Suni Williams and Butch Wilmore’s situation is unusual, their return trip will be pretty routine, as they were already ...

The award-winning novel 'Orbital' explores the inner thoughts of astronauts during a single day aboard the International ...

Here's what we know about options SpaceX might have to bring the Starliner astronauts home faster from the space station.

The founder of SpaceX said President Trump had asked his company to return two astronauts aboard the space station to Earth ...

Despite the statement from President Trump, NASA had already scheduled the astronauts' return for late March or April.