Astronomers discovered a new moon of Uranus and hundreds of moons around Saturn over the past year, and there may be many ...

States with booming data center construction are seeing spikes in new power needs. Much of it is being met by coal and solar.

A single discovery in the outer solar system forced astronomers to confront a problem they couldn’t ignore, ultimately leading to Pluto’s controversial demotion from planet status.

Humanity has sent into space everything from lightsabers and Tesla Roadsters to golden records and entire digital genetic ...

A rare image reveals a giant planet clinging to two stars, helping scientists understand how planets survive in chaotic star ...

The James Webb Space Telescope detected an atmosphere rich with carbon and helium, which is unexpected on this hot planet ...

Dec. 19 (UPI) -- Comet 3I/ATLAS passed its nearest point to Earth early Friday and approaching within 168 million miles.

Mars changed from a blue world with water to a red desert because its atmosphere escaped into space over billions of years.

But in this case, the companion is officially considered an exoplanet, not a star. The International Astronomical Union ...

The mystifying 3I/ATLAS interstellar comet is blazing toward Earth and will in a matter of days come as close to our planet ...

An artistic rendering of a dust and gas disk encircling the young exoplanet, CT Cha b, 625 light-years from Earth.