Learn how a possible ninth planet, the theoretical Planet X, could have acquired its wide orbit in the outer Solar System - a process that's also applicable for other planets.

A climate group took responsibility for the protests that disrupted the U.S. Open semifinal between Coco Gauff and Karolina Muchova on day 11 of the tournament Thursday night.

The planet is located some 1,200 light-years away. A light-year is 5.8 trillion miles. It’s the second-lightest exoplanet found so far based on its dimensions and mass, according to the researchers.

NEWS 20 March 2024 Planet-eating stars hint at hidden chaos in the Milky Way A handful of middle-aged stars seem to have gobbled up a planet, challenging assumptions about the stability of such ...