Scientists are grappling with a cosmic mystery: why does the Universe behave differently on massive scales compared to our ...

Learn more about the interstellar traveler, Comet 3I/ATLAS, and what researchers know about its place of origin.

Measurements of this interstellar comet’s molecular makeup show an excess of heavy water molecules that is dramatically ...

The celestial body’s status as the solar system's ninth planet was withdrawn in 2006. Now some experts say we might want to ...

Astrophysicists are mapping a vast, hidden structure in space that appears to guide matter and radiation along a kind of interstellar highway stretching from our solar neighborhood to distant stars.

New observations of the interstellar comet 3I/ATLAS include the first measurement of the abundance of deuterated water ...

"We not only reconstructed an unaltered image of the emissions from deep space, but also obtained valuable information on the ...

A newly-discovered planet named Enaiposha, GJ 1214 b, is unlike anything found in our own solar system, similar to a ...

Add Yahoo as a preferred source to see more of our stories on Google. An artist's impression shows the "inside out" planetary system around the star LHS 1903. - ESA An exoplanetary system about 116 ...

Interstellar comet 3I/ATLAS is now on its way out of our solar system, never to return. The comet was only the third-ever ...

Easy: Venus is the weirdest planet in the solar system. The most distant major planet from the sun and the last stop before ...