Technically, the United States won’t turn 250 until July 4. But Donald Trump dictated this weekend that before the dawn’s early light of only the third day of America’s semiquincentennial was soon ...

For the first time, astronomers have managed to weigh a planet that is not bound to any star, a lonely world drifting through ...

Astronomers have, for the first time, pinned down both the mass and distance of a planet that drifts through the galaxy ...

Scientists have discovered a rogue planet roaming the Milky Way after combining observations from Earth and a space telescope ...