What would happen if another sun also brought its planets along for the ride?

NASA's infrared telescope SPHEREx captured stunning images of interstellar comet 3I/ATLAS as it exited the solar system.

A planetary system 116 light-years from Earth has a peculiar pattern. It could flip the script on how planets form, scientists say.

The European Space Agency's billion-dollar Jupiter Icy Moons Explorer has shifted its focus to an extraordinary cosmic ...

The fate of a comet that was predicted to pass close to Earth remains a mystery five years after its dramatic breakup in the ...

The interstellar visitor, only the third such object to be discovered passing through our solar system, ignited controversial ...

Surprised astronomers said Thursday they have discovered a star with planets in a bizarre order that defies scientific ...

A newly studied solar system breaks the usual planet pattern, raising fresh questions about how rocky and gas planets form.

Comet 3I/ATLAS was full-on erupting into space in December 2025, after its close flyby of the sun, causing it to significantly brighten. Even water ice was quickly sublimating into gas in ...

Close-up measurements from NASA’s Parker Solar Probe are giving scientists an unprecedented look at how the solar wind gains ...

Scientists have discovered something that they previously thought wasn’t possible – an ‘inside out’ star system. When you line all the planets in our solar system up, the four closest to the sun are ...