Officially named 3I/ATLAS, the comet was confirmed as having originated outside of Earth's solar system on July 3, according ...

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

NASA has discovered a new interstellar comet that's currently located about 420 million miles away from Earth. The space ...

Astronomers have observed an object that originated from beyond our solar system, thought to be an interstellar comet, ...

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

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

The comet is only the third known object originating outside of out solar system to pay us a visit.

Recent observations have revealed carbon monoxide venting from the largest comet ever seen, providing clues about its origins ...

In the outer reaches of our solar system, far beyond the orbit of Pluto, lies Sedna, one of the most mysterious objects ever ...

Planetariums were a hit with the public. Within decades, they had spread around the world – the first planetarium in the ...