Christopher Nolan's 2014 sci-fi movie gets analyzed by a real astrophysicist, who sings the movie's praises despite ...

A new method for manufacturing lightsails that can reach up 20% of the speed of light is making the technology look more ...

Alien: Earth is just around the corner and fans are finally getting a look at the interstellar horrors it has in store. The ...

An international team of researchers used multi-wavelength observations of active galactic nuclei to study how black holes ...

Interstellar objects are among the last unexplored classes of solar system objects, holding tantalizing information about ...

A NASA spacecraft far from Earth has made an unexpected discovery, after turning its instruments towards a dark patch of sky at the galactic poles for over 200 hours. Studying the background light ...

It’s National Alien Abduction Day (yes, that’s a thing) on March 20. With more than two dozen unexplained UFO sightings over ...

The heliosphere, a cosmic bubble formed by the Sun, protects our solar system from interstellar threats and influences life's ...

Bothell, Wash.-based Portal Space Systems shows off the lab where its solar thermal propulsion system will be developed.

Nuclear pulse propulsion is a technology that would work. It was being developed in the 1960s but it was stopped because of ...

If we achieve advanced nuclear, antimatter propulsion or other advance propulsion it would be possible to achieve near ...

Voyager 1 crossed into interstellar space in 2012, followed by Voyager 2 in 2018, making them the only spacecraft to operate ...