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NASA's Kepler space telescope confirms the discovery of the first Earth-size planet 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 space telescope
NASA space telescope for exoplanetology (2009–2018)
The Kepler space telescope is a defunct space telescope launched by NASA in 2009 to discover Earth-sized planets orbiting other stars. Named after astronomer Johannes Kepler, the spacecraft was launched into an Earth-trailing heliocentric orbit. The principal investigator was…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)
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)