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Altair (spacecraft)
The Altair spacecraft, previously known as the Lunar Surface Access Module or LSAM, was the planned lander spacecraft component of NASA's cancelled Project Constellation. Astronauts would have used the spacecraft for landings on the Moon, which was intended to begin around 2019. The Altair spacecraft was planned to be used both for lunar sortie and lunar outpost missions.〔(【引用サイトリンク】title=Lunar Orbit Insertion Targeting and Associated Outbound Mission Design for Lunar Sortie Missions )〕 On February 1, 2010, U.S. President Barack Obama announced a proposal to cancel the Constellation program (except the Orion spacecraft), to be replaced with a re-scoped program, effective with the U.S. 2011 fiscal year budget.〔http://www.nasa.gov/pdf/420990main_FY_201_%20Budget_Overview_1_Feb_2010.pdf〕
== Name ==
On December 13, 2007, NASA's Lunar Surface Access Module was retitled "Altair", after the 12th brightest star in the northern hemisphere's night sky, Altair in the constellation Aquila. In Latin, "aquila" means "eagle", providing a connection to the first crewed lunar landing, Apollo 11's Eagle; the name Altair itself is a Latinization of the Arabic ''al-ṭā'ir'', meaning "the Eagle," "the Bird," or "the Flyer."
Prior to the announcement of the "Altair" name, reports had suggested other names had been considered by NASA,〔(【引用サイトリンク】url=http://www.flightglobal.com/articles/2006/10/03/209644/nasa-to-name-moonlander-after-greek-goddess-artemis.html )〕 but Altair won in a vote by the design team over Pegasus.
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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