Rocky bodies called protoplanets were thought to have formed slightly earlier in the inner solar system than those beyond the ...

I/ATLAS, earlier known as A11pI3Z, is only the third interstellar visitor to be discovered passing through our corner of the ...

Astronomers are scrambling to gather data on a mysterious object that’s currently hurtling through the solar system.

The object gained an official name, C/2025 N1 or 3I/ATLAS, on Wednesday. Moving at a record-setting speed for an interstellar ...

Astronomers have discovered a new interstellar comet passing through our solar system, marking the third interstellar object ...

A small, inconspicuous meteorite may be about to change our understanding of how and when our solar system formed. Tiny shavings from the meteorite Northwest Africa 12264 are challenging the long-held ...

Close stellar encounters could change the structure of our planetary system, potentially dooming Earth or other worlds to ...

A fascinating glimpse into how a solar system like our own is born has been revealed with the detection of planet-forming ...

There are lots of objects floating around in our solar system, but one thing most have in common is a common origin, and then ...

Folks, it's official: the object that astronomers recently spotted blowing through the outer solar system came from ...

An "interstellar object" is speeding toward the inner solar system, where Earth is located, astronomers have confirmed.

All eyes are on Comet 3I/ATLAS as astronomers worldwide chase the exotic ice ball through our solar system ...