The cast of exoplanets has an extraordinary new member. Using ESO’s telescopes, astronomers have discovered an approximately seven- Jupiter-mass companion to an object that is itself only twice as ...

Astronomers are challenging an existing theoretical model and thrilling the astronomy community with their discovery of a seven-Jupiter-mass companion next to a planemo, or planetary mass object, only ...

Some search for battle, others are born into it ...

A newly spotted pair of planet-sized objects floating far away from any starhas astronomers puzzling over how such a bizarre system could have formed. Using theEuropean Southern Observatory's ...

Planetlike objects floating alone through space harbor disks of material that could make other planets or moons, something like miniature versions of our solar system, astronomers said Monday. What ...

Planet-like objects floating alone through space harbor disks of material that could make other planets or moons, something like miniature versions of our solar system, astronomers said today. What ...