(NASA/JPL/Voyager-ISS/Justin Cowart) Just last year, NASA reported that a different 'hot Jupiter' planet, named WASP-43 b, around 280 ... so close to its star, this alien world still has cooler ...

The first planet, K2-22b, is a Neptune-sized rocky world located hundreds of light-years away. It orbits its host star in ...

NASA's alien planet-hunting Kepler Space Telescope is pretty good at its job, a new statistical analysis suggests. In total, the study, published Tuesday in the Astrophysical Journal, validates ...

Credit: D. Aguilar/Cfa A team of researchers using telescopes in space and on Earth announced a new haul of about 100 previously undiscovered alien planets on Monday. The cosmic "treasure trove ...

As of January 2012, the tally of confirmed alien worlds has skyrocketed to just over 720. However, the hunt is still on for a truly Earthlike planet, one with the right size, temperature ...