Interstellar flight is so daunting because of the vast distances separating stars. The extrasolar system closest to us, for example, is the three-star Alpha Centauri, which lies about 4.3 light-years ...

Add Yahoo as a preferred source to see more of our stories on Google. A large silver rocket flies through a golden morning sky. SpaceX's Starship megarocket could eventually live up to its bold name. ...

To travel between solar systems, a spacecraft would need extremely sophisticated – if not impossible – technology.

Solar-sailing 'bubblecraft' could get to Proxima Centauri in 185 years, a study suggests. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.

Alpha Centauri sits more than four light-years away, close enough to fascinate generations of dreamers and far enough to make today’s rockets look painfully limited. At current speeds, a trip there ...

NASA has funded eight advanced-technology concepts that agency officials believe could help transform space science and exploration. The high-risk, high-reward ideas — which received grants under ...

The Pentagon on 22 May 2026 released a second trove of once-classified images and video footage of unexplained flying objects over the United States, reigniting the debate over whether ...

Interstellar space travel. Fantasy of every five-year-old kid within us. Staple of science fiction serials. Boldly going where nobody has gone before in a really fantastic way. As we grow ever more ...

3I/ATLAS is the fastest comet ever recorded and its interstellar! NASA's Goddard Space Flight Center explains. Credit: NASA's ...