Scientists now say an interstellar comet discovered earlier this month could be one of the oldest that astronomers have ever ...

The astronomical community is abuzz over a newly discovered "interstellar object," only the third of its kind ever seen, ...

Just the third-ever confirmed interstellar object has been detected in our solar system. Here's what we know. (Spoiler: It's ...

Astronomers have confirmed the third interstellar object on record is dashing through our solar system. Dubbed 3I/ATLAS, it ...

A new interstellar object, A11pl3Z, has been discovered in our solar system, marking the third such object to be observed. It ...

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

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

A newly discovered ice comet from deep space may be over 7 billion years old, making it the most ancient comet scientists ...

For only the third time in recorded history, an interstellar object has crossed into our solar system, creating quite the ...

Newly released imagery from NASA shows the Sun's corona in stunning detail after the Parker Solar probe performed its closest-ever flyby.

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 ...

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