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.

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Beyond the familiar planets lies a fascinating frontier filled with icy worlds, mysterious orbits ...

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 region ...

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

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

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

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

The European Space Agency-led Solar Orbiter mission has split the flood of energetic particles flung out into space from the ...

In the swirling clouds of gas and dust that surround newborn stars, planets begin to form. These planet-forming disks are ...

University of Bristol astrophysicists are helping shed new light on an Earth-sized exoplanet 40 light years away where liquid ...