interstellar travel

Two NASA astronauts will float outside the International Space Station today to prepare the orbiting lab for new solar wings and you can watch it live online.

Launching an interstellar probe sounds exceedingly lofty, ambitious, and tough to do. But there's no need to wait for new technology, say advocates.

The community ponders about the most important questions in space exploration and interrogates dark matter.

Space is big — really big. And if you want to successfully navigate the interstellar depths of our galaxy, you're going to need some sort of reliable system.

Check out our reading list for space and sci-fi lovers, as well as children who are interested in astronomy and spaceflight.

Spacecraft made of carbon-foam bubbles could zoom from Earth to Alpha Centauri in 185 years, driven solely by the power of the sun, a new study finds.

The first people to colonize a world in another star system may have trouble describing their new home to the folks back on Earth, a recent study suggests.

Otherwise, they'd be ferociously unstable.

Spacecraft could fly to distant stars using sails with surfaces similar to those of CDs and DVDs to help them stay centered on laser beams, a new study finds.