Is there a massive undiscovered planet on the outer reaches of the solar system? The idea has been around since before the ...

The celestial body's unusual orbit “implies that something extraordinary occurred" in the early days of the solar system—and ...

Comet 3I/ATLAS was first identified by the Asteroid Terrestrial-impact Last Alert System (ATLAS), a global network of four ...

In a groundbreaking discovery, astronomers have, for the first time, observed the formation of a new solar system.

The Subaru Telescope has revealed a fourth member of the sednoids, a group of small bodies with peculiar orbits around the ...

Earlier this month, astronomers observed a mysterious object with interstellar origins speeding through the inner solar system. It's an exceedingly rare occurrence, marking only the third confirmed ...

Data captured by the ALMA telescope in Chile and the James Webb Space Telescope showed planets forming around a star in the ...

Around a Sun-like star just 1,300 light-years away, a family of planets has been seen in its earliest moments of conception.

Photographing the sun can be an amazing experience and this guide explains how to do it in safety with a camera or telescope.

— NASA Solar System (@NASASolarSystem) February 6, 2024 The Juno spacecraft completed its first flyby of Io, capturing stunning imagery, in late December 2023—and this week, it repeated the ...