A lonely world the size of Saturn is drifting through the Milky Way with no star to warm it, and for the first time astronomers have managed to weigh it. By catching a fleeting alignment between this ...

Astronomers have observed a planet that in some ways behaves more like a star — including a massive growth spurt unlike anything witnessed before in a free-floating planet. The rogue planet, which ...

A "rogue planet" is growing at a record-breaking rate of six billion tons per second, reveals new research. Located around 620 light-years away from Earth, scientists say it has experienced a ...