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

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

NASA telescopes in Chile have discovered a comet from interstellar space, making its closest approach in October.

An object dubbed 3I/ATLAS is only the third interloper from outside the Solar System seen in all of human history.

For only the third time in history, astronomers have detected a new interstellar visitor — an object from another star — blitzing into our solar system.

The space agency spotted the quick-moving object with the Atlas telescope in Chile earlier this week, and confirmed it was a ...

A new investigation into old Kepler data has revealed that a planetary system once thought to house zero planets actually has ...

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