A superior conjunction occurs when Venus is the farthest from Earth, on the other side of the sun. Conversely, astronomers ...

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

Solar panels are next to useless in the outer solar system, so NASA’s Voyager probes rely on nuclear batteries—technology ...

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

New connections discovered between the Sun's photosphere and CI chondrites meteorites, providing clues about the origin of materials.

The orbit Venus takes around the sun results in an inferior conjunction as it transitions from appearing in the evening sky to the morning sky.

As civilizations become more and more advanced, their power needs also increase. It's likely that an advanced civilization ...

As we step into a future that’s increasingly reliant on sustainable energy, solar technology is transforming our everyday ...

Interstellar material has been discovered in our solar system, but researchers continue to hunt for where it came from and ...

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

A new five megawatt solar array system, known as the Chippewa Sun, has gone online in the town of Hallie off of Highway 29, ...

How do we power missions in the outer reaches of our solar system and beyond? The solution, developed in the '60s, can last ...