A byproduct of aging nuclear weapons stockpiles could help power spacecraft on missions lasting decades. Americium-241, an ...

Long-term space travel to Mars could be bad for astronauts' hearts, a new zero-gravity study shows. After a month at the International Space Station, a set of 48 bioengineered human heart tissue ...

Deep space travel has a biology problem. Human bodies are built for a narrow band of temperatures, gravity and radiation, yet any realistic journey to Mars or beyond would subject astronauts to months ...

How can fission-powered propulsion help advance deep space exploration, specifically to the outer planets like Jupiter, Saturn, Uranus, and Neptune? This is what a recent study presented at the 56th ...

Space is the final frontier, but many sci-fi movies already take the audiences in trips through the cosmos by the side of astronauts.

"The lightsail will travel faster than any previous spacecraft, with potential to eventually open interstellar distances to direct spacecraft exploration." When you purchase through links on our site, ...

Editor’s note (August 28th 2024): The mission was postponed a few hours before it was due to launch due to worries about bad weather. ENTHUSIASTS HAVE been paying to fly into space for more than two ...

THE USS Enterprise they are not. One looks like a magic-marker pen, except that it is 58km long. The second, a pair of conjoined Ferris wheels. And the third, a giant jellyfish. They are, nevertheless ...