Using a powerful combination of space-based measurements and Subaru’s advanced imaging, astronomers have discovered two rare companions, one of which enables a key test for NASA’s Roman Space ...

For the first time, scientists have continuously monitored a planet's escaping atmosphere over a complete orbit, revealing ...

Astronomers have discovered 2017 OF21, a mysterious dwarf planet in the solar system's frozen outskirts. This video explores ...

For decades, Pluto was our solar system's ninth planet. This video explains the scientific journey that led to its ...

It's going on two years since the International Astronomical Union rewrote its definition of a planet and busted Pluto down to something it called a "dwarf planet." But it's not a done deal, says Mark ...

New high-contrast images from SPHERE show a stunning variety of debris disks shaped by collisions of tiny planet-building ...

Seven Days Until Morning, a new survival horror and mystery game, has launched on Xbox Series X|S - playable now.

Nearly a century after Pluto’s discovery, astronomers are still hunting for mysterious planets beyond Neptune - including a ...

Click to share on X (Opens in new window) X Click to share on Facebook (Opens in new window) Facebook It’s finally getting chilly outside for most of us, which means there’s no better time to curl up ...

A new study has proposed the existence of Planet Y, an alternative Planet Nine candidate that is smaller and closer to Earth than the hypothetical Planet X, which astronomers have been hunting for ...

(CNN) — The search for an unknown planet in our solar system has inspired astronomers for more than a century. Now, a recent study suggests a potential new candidate, which the paper’s authors have ...

The space telescope is peering into our own solar system's future. Anyone hungry for the icy crunch of a Pluto-like body? No? Well, one nearby white dwarf is going all in on a Pluto-esque snack.