NASA Discovers Rogue Planet Heavy As 10 Earths

Aptly named, rogue planets undertake solitary journeys through the galaxy, trajectories unbounded by any star. If they sound isolated or rare—lone wolves charting their own destinies, the anti-heroes of the cosmos—well, they aren’t. 

Experts believe the lonesome planets are more plentiful than those otherwise orbiting stars. However, detecting these wandering, soloist worlds has proved a notoriously difficult challenge. 

For one, they tend to be pretty tiny, and two, the cold, dark expanses they traverse don’t lend themselves to easy discovery.