Space elevators? Nuclear rockets? The future of space travel could look radically different. Imagine taking an elevator to space. Or blasting off in a nuclear rocket. That might sound like science ...

Our solar system is a weird place. Much more than a home to eight planets, it’s filled with a myriad of fascinating other smaller bodies, including moons, asteroids, and comets. In recent decades, ...

This year is the 25th anniversary of humans inhabiting the International Space Station. A new PBS documentary looks at how the ISS was built and the challenges of surviving in outer space.

At the end of a nearly flawless 15-day mission in early 2003, the Space Shuttle Columbia disintegrated during reentry into Earth's atmosphere, killing the crew of seven men and women. In this ...

PBS's NOVA will present "Operation Space Station," a two-part special premiering November 5 and 12, documenting 25 years of continuous human habitation on the International Space Station (ISS) through ...

Astronauts and Mission Control relive terrifying moments during construction of the ISS. From ammonia leaks to Space Shuttle disasters to a spacewalk gone terribly wrong, astronauts and Mission ...

(This video is no longer available for streaming.) It costs about $500 million to take the space shuttle out for a spin. But what if there was another way to get to space? And what if that way were as ...

NARRATOR: The pressure is on to save a dying explorer, the Hubble space telescope. CHUCK SHAW (Director, Hubble Servicing Mission): It's the most productive science instrument that's ever been made.

Astronauts and Mission Control relive terrifying moments during construction of the ISS. From ammonia leaks to Space Shuttle disasters to a spacewalk gone terribly wrong, astronauts and Mission ...