Astronomers are tracking strange orbital patterns in the outer Solar System that suggest a massive unseen planet may exist ...

Astronomers are investigating a potential hidden planet, dubbed Planet Y, far beyond Neptune. Its gravitational pull is ...

The simulation of the Solar System that came the closest to the observation was the presence of a small planet, between the ...

Astronomers are abuzz with the discovery of a rogue planet, 2MASS J05325346+0919037, which is set to pass within 0.05 ...

The James Webb Telescope captures the beginning of planetary formation around the young star HOPS-315 for the first time.

Since Pluto was relegated to dwarf planet status, almost everyone has agreed that there are eight planets in our solar system ...

A recent study by Princeton University astronomers suggests the possible existence of a previously undetected planet in our ...

Discover the immense power and influence of Jupiter's gravity on our solar system and the role it plays in shaping our ...

A low-density, puffy planet orbiting relatively far from a young star in a nearly perpendicular orbit. What's going on?

The James Webb Telescope measured a potential moon-forming disk encircling an exoplanet, NASA recently announced, inviting researchers to observe and study moon formation as it happens, while ...

Roughly 4.5 billion years ago, the young solar system was a swirling cloud of gas and dust that formed the first asteroids ...

An alien comet passing through our solar system made its closest approach to Mars recently, and two European robotic spacecraft orbiting the red planet turned to take a look.