Astronomers have uncovered a massive new trans-Neptunian object, 2017 OF201, lurking at the edge of our solar system. With an ...

Astronomer and Pluto mission leader S. Alan Stern explores how the field has transformed during his decades-long career.

Astronomers say they have evidence that there may be a hidden planet in our Solar System. Named 'Planet Y', the Earth-sized ...

The European Southern Observatory said the discovery as "the first clear detection of a baby planet in a disc with multiple rings" ...

A new trans-Neptunian object, 2017 OF201, has been found with a vast orbit and potential dwarf planet size. The finding hints ...

New simulations suggest that up to four of the solar system's rocky planets, including Earth and a long-lost world, once orbited in mathematical harmony around the infant sun.

Pluto isn't the only dwarf planet residing in our solar system. Try your hand at naming the others!

The recently discovered interstellar object 3I/Atlas is set for a close flyby of Mars in October, where it can be observed by ...

Fresh results from near-infrared instruments foretell a bright future for finding life elsewhere in the Milky Way ...

Somewhere at the edge of the solar system a new Earth-sized world might be lurking, dubbed Planet Y. Astronomers have long proposed that there might be hidden planets beyond the Kuiper belt, a ...

The peculiar trajectory and uncertain origin of interstellar object 3I/ATLAS have sparked scientific debate about its natural or technological origins.

The third interstellar object ever observed is in our neighborhood—for now. And, asteroid Bennu could contain dust from ...