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

"We have been waiting for 10 years to confirm that our finely tuned operations of the telescope would also allow us to access ...

Astronomers have discovered four planets that are just a fraction of the mass of Earth orbiting Barnard’s Star, which is 6 ...

The Radcliffe Wave is a massive, undulating structure filled with dense clouds of gas and dust, stretching across several ...

The James Webb Space Telescope has captured its first direct images of carbon dioxide in a planet outside the solar system in ...

Floating around at the edge of the Solar System are leftovers from its formation. This is the Kuiper Belt, which is composed ...

One million alien visitors from another star system could already be lurking in the solar system. We aren't talking about ...

"We have observed giant gas planets, such as Jupiter or Saturn, but in another solar system," explains the leader of this research on the HR 8799 system, located 130 light-years away. The study ...

The James Webb Space Telescope has captured its first direct images of carbon dioxide in a planet outside the solar system in ...

Early in our Solar System’s history, bits of icy debris were scattered and then gradually coaxed into a spiral alignment in ...

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

Faint signatures detected by the Canada France Hawaii Telescope have revealed 128 new moons around Saturn, making it the ...