An object eight times the mass of Jupiter may have swooped around the sun, coming superclose to Mars' present-day orbit ...

Beyond Neptune lies the Kuiper Belt, a vast expanse of icy bodies that may hold clues to the solar system’s formation. These ...

A U.S. scientist searching for a civilization across 7 Earth clones circling the red dwarf star TRAPPIST-1 says its own alien ...

When astronomers found a large world farther out than Pluto, it became one of the final nails in the coffin of our ninth ...

In October 2020, a van-sized robotic spacecraft briefly touched down on the surface of Bennu, a 525-meter-wide asteroid 320 ...

"Across the universe we’re adding billions of new solar systems and trillions ... Many of the new planets have a "new terrain system" and that allows for truly towering mountains and even ...

Jan. 15, 2025 — New observational data and simulation models have confirmed a new type of planet unlike anything found in the Solar System. This provides another piece of the puzzle to ...

Stargazers will be treated to a dazzling six-planet "alignment" this January.

An object we thought belonged to the most common category of planet in the galaxy has turned out to be something we've never seen ... because we have nothing directly analogous to them here in our ...

Planet Nine", dubbed, has fascinated scientists for its ability to account for "anomalous" motions of objects located faraway ...

Six of our cosmic neighbors are expected to line up across the night sky tonight, in what has been dubbed a "planetary parade ...