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 ...

This Saturn-mass planet was detected using a technique that astronomers have been trying to perfect for decades. By combining observations from ground-based telescopes with space-based instruments, ...

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 ...