Interstellar Technologies ZERO rocket engine test-fired at Hokkaido Spaceport in Taiki, Hokkaido. It is fueled by liquid ...

Reaching Alpha Centauri within a single human lifetime has long sounded like science fiction, yet a new generation of nuclear pulse concepts is forcing that timeline into serious discussion. The idea ...

Astronomers assemble! Here's your chance to help make better predictions. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. A newly found ...

The Manhattan-size interstellar object 3I/ATLAS will buzz past Mars this week — making its closest pass to any planet on its route as scientists are rushing to coordinate craft to observe the ...

On May 22, 2026, the Pentagon released a second batch of previously classified photos and videos showing what appear to be ...

Even as a brilliant, naked-eye comet slices through Earth's sky (cheers, Comet Lemmon!), the most famous object in the solar system right now is hidden on the far side of the sun: the interstellar ...

The big reveal will come Wednesday (Nov. 19) at 3 p.m. ET. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Update for 7 pm ET: NASA revealed new ...

Interstellar space is unforgivingly vast, but the emptiness has some advantages. The lack of atmosphere means there is no aerodynamic drag.