Dwarf planet 2023 KQ14, Ammonite, has a stable orbit that challenges the hypothesis of the mysterious Planet Nine.

Is the future great planetary laboratory hurtling in our direction incognito, veiled in gloom and cold? That’s what ...

In a new study, researchers at the University of Chicago have discovered in simulations that a small body under half the size ...

A strange 200 million-year-old object with the mass of a planet has been discovered 20 light-years from Earth, outside our solar system. The "rogue," as it's referred to by researchers, is producing ...

"This discovery was partly serendipity! But, we believe there are many more such opportunities hidden in Hubble data." Astronomers discovered a new rogue planet lurking in archival data gathered by ...