This story was live briefly with inaccurate information about the number of planets found in the habitable zone of their respective planetary systems. A total of three planets are in the habitable zone.
Thought to have the potential for liquid water, the three planets are close to Gliese 667C, a star about 22 light-years from home.
The agency's Kepler space telescope locates three planets -- in two new planetary systems -- that are the right distance from their suns to make them potentially life-supporting.
You may think this planet is overpopulated or you may just be sick of the partisan politics. In either case, HD 40307g is an attractive getaway.
In a long-awaited milestone, astronomers using a NASA space telescope have found a roughly Earth-size world, Kepler-22b, orbiting around a sun-like star where conditions may be favorable for life.
The wackier a planet's wobble, the more likely it could be to sustain life and keep from going full Popsicle, according to new research.
Kepler-186f orbits an M dwarf star in the constellation Cygnus. More importantly, it's the first confirmed Earth-size, potentially habitable planet elsewhere in the universe.
In a distant solar system, water-soaked chunks of rock that contain two of the key elements of a habitable planet have been spotted for the first time.
You should't feel as alone today as you did yesterday. NASA says it has confirmed the existence of 715 new exoplanets beyond our solar system, many of them not that different from Earth in terms of size.