Astronomers Successfully Weigh a Starless ‘Rogue Planet’ Drifting Through the Milky Way
Astronomers have precisely measured the mass of a rogue planet wandering through the Milky Way using a rare gravitational microlensing event. By combining observations from ground-based telescopes across three continents with data from ESA’s Gaia spacecraft, researchers determined the planet’s distance and found it to be about the mass of Saturn. The discovery pro...