Scientists may have discovered a dwarf planet far beyond Neptune — an unearthing that may disprove a longstanding theory ...

A team of astronomers believe they may have discovered a new dwarf planet—just like Pluto—on the edge of our solar system.

Webb has captured a frigid exoplanet in a wildly tilted orbit, revealing a system shaped by past planetary violence and ...

Astronomers using the James Webb Space Telescope (JWST) have taken a fresh look at the distant edges of our solar system — ...

For the unversed, "Planet Nine" is a hypothetical planet which is reportedly larger than Earth that is thought to orbit ...

An international team of astronomers led by the University of Galway has discovered the likely site of a new planet in ...

For the dwarf planet candidate, one trip around the sun takes over 24,000 years. Its orbit challenges a proposed path for a hypothetical Planet Nine.

A newly detected planet beyond Pluto is not just expanding our understanding of the Solar System, it might be quietly rewriting it. Astronomers from the University of Taiwan recen ...

Space artists can sometimes stretch scientific data for a bigger visual bang. At New York's natural history museum, they ...

The breakthrough came using a cutting-edge observational method that detects unseen planets via subtle deviations in their ...

Scientists have unlocked one of the solar system’s many secrets from an unexpected source: a planetarium show that opened to ...

Astronomers anticipate an unprecedented view of the solar system as the Rubin Observatory begins to scan millions of hidden ...