New supercomputer simulations suggest the Milky Way could be surrounded by dozens more faint, undetected satellite ...

For many of us, the idea of a solar system with just eight planets is a fundamental concept in science. However, since Pluto was reclassified as a dwarf planet in 2006, Neptune has stood as the last ...

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 ...

How many dwarf planets are there in our solar system? The recent discovery of 2017 OF201 makes the tally anywhere between ...

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

Though 3I/ATLAS will never come close to Earth, its passage offers a rare chance to study material beyond our solar system ...

A newly discovered object speeding through our solar system is sparking excitement among astronomers because it’s not from ...

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

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

The sun rises from the east, and sets in the west - this is a well-established fact for the longest time, and this is due to ...

This new dwarf planet may exist at the edge of the solar system, possibly disproving Planet Nine's existence. This is the story of that newly encountered planet.