December 21, 2014
UNDATED (CNN) -- NASA'S Kepler Telescope discovered three new, potentially-habitable planets in distant solar systems.
Two of the planets are part of the Kepler-62 five-planet system. They are known as Kepler-62-E and Kepler-62-F.
A third planet, in the Kepler-69 system, is called Kepler-69-C.
The planets are each inside something called the "habitable zone," the area near a star like our sun that can theoretically hold liquid water.
The reality is, however, there is no way to find out for sure. The planets are all light years away from Earth and humans do not yet have the technology to travel there.
This is not the first time NASA's giant telescope has discovered new planets that could possibly sustain life. Kepler 22-B was discovered in 2011.