A mysterious "rogue planet" has been observed gobbling 6 billion tons of gas and dust a second — an unprecedented rate that blurs the line between planets and stars, astronomers said Thursday. Unlike ...

Astronomers have long speculated about the existence of a mysterious planet lurking far beyond Neptune, a world several times larger than Earth whose gravity could be shaping the outer reaches of our ...

The breakthrough was made by an international team of astronomers using the powerful James Webb Space Telescope, which observed Uranus for nearly one full rotation and captured faint light emitted by ...

A mysterious new world may be hiding in the outer reaches of our solar system. According to arecent study published on arXiv by Amir Siraj of Princeton University and colleagues, a previously unknown ...

Does our solar system have a mysterious ninth planet? The discovery of a new dwarf world suggests not. It's an evocative idea that has long bedeviled scientists: a huge and mysterious planet is ...

Scientists have finally worked out where the most common kinds of planets come from. That has made their origin somewhat mysterious. Until now, researchers have struggled to understand where these ...

Add Yahoo as a preferred source to see more of our stories on Google. A mysterious "rogue planet" has been observed gobbling 6 billion tons of gas and dust a second — an unprecedented rate that blurs ...