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.

Imagine taking an elevator to space. Or blasting off in a nuclear rocket. That might sound like science fiction, but scientists are racing to develop new, more efficient methods of space travel - and ...

William Shatner kicks things off with a compliment. We’re talking via Zoom — he’s beaming in from the sprawling kitchen of his Los Angeles home, which overlooks the San Fernando Valley. I’m dialing in ...

For decades, NASA has dreamed of building a rocket powerful enough to take humans to Mars - and now, that dream might finally come true. The agency is developing a nuclear-powered engine that could ...

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 ...