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SETI Institute
:''Not to be confused with the SITE Institute.''
The SETI Institute is a not-for-profit organization whose mission is to “explore, understand and explain the origin, nature and prevalence of life in the universe”. SETI stands for the "search for extraterrestrial intelligence". One program is the use of both radio and optical telescopes to search for deliberate signals from extraterrestrial intelligence. Other research, pursued within the Carl Sagan Center for the Study of Life in the Universe, includes astrophysics, planetary science, discovery, characterization, and formation of extrasolar planets, potentials for life on Mars and other bodies within the Solar System, and the habitability of the galaxy (including the study of extremophiles). The SETI Institute’s public outreach efforts include working with teachers and students in promoting science education and the teaching of evolution, working with NASA on exploration missions such as Kepler and SOFIA, and producing a weekly science program: ''Big Picture Science''.
On 13 February 2015, scientists (including David Grinspoon, Seth Shostak, and David Brin) at an annual meeting of the American Association for the Advancement of Science, discussed Active SETI and whether transmitting a message to possible intelligent extraterrestrials in the Cosmos was a good idea; That same week, a statement was released, signed by many in the SETI community, that a "worldwide scientific, political and humanitarian discussion must occur before any message is sent". On 28 March 2015, a related essay was written by Seth Shostak and published in the New York Times.
==Instruments used==
Instruments used by SETI Institute scientists include the ground-based Allen Telescope Array, several ground-based optical telescopes such as the Shane telescope at Lick Observatory, the W.M. Keck telescopes & IRTF in Hawaii, the Very Large Telescopes in Chile. SETI researchers also use space telescope facilities, mostly the Hubble Space Telescope, the Spitzer Space Telescope and the Herschel Space Telescope. SETI scientists are also involved in space missions, the New Horizons mission toward Pluto, the Cassini mission, currently in orbit around Saturn, and the Mars Rovers Opportunity and Curiosity.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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