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NASA announced the discovery of Kepler-186f (pictured), the first exoplanet with a radius similar to Earth's discovered in the habitable zone of another star.
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NASA
American space and aeronautics agency
The National Aeronautics and Space Administration is an independent agency of the US federal government responsible for the United States's civil space program, aeronautics research and space research. Established in 1958, it succeeded the National Advisory Committee for…Source: Wikipedia (CC BY-SA)
Kepler-186f
Terrestrial exoplanet orbiting Kepler-186
Kepler-186f is an Earth-sized exoplanet orbiting within the habitable zone of the red dwarf star Kepler-186, the outermost of five such planets discovered around the star by NASA's Kepler space telescope. It is located about 580 light-years from Earth in the constellation of…Source: Wikipedia (CC BY-SA)
Exoplanet
Planet outside of the Solar System
An exoplanet or extrasolar planet is a planet outside of the Solar System. The first confirmed detection of an exoplanet was in 1992 around a pulsar, and the first detection around a main-sequence star was in 1995. A different planet, first detected in 1988, was confirmed in…Source: Wikipedia (CC BY-SA)
Habitable zone
Orbits where planets may have liquid surface water
In astronomy and astrobiology, the habitable zone (HZ), the circumstellar habitable zone (CHZ), the Goldilocks zone, is the range of orbits around a star within which a planetary surface can support liquid water given sufficient atmospheric pressure. The bounds of the HZ are…Source: Wikipedia (CC BY-SA)