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LISA Pathfinder
LISA Pathfinder, formerly Small Missions for Advanced Research in Technology-2 (SMART-2), is an ESA space probe scheduled to be launched at 4.15 GMT on December 3, 2015.〔〔(【引用サイトリンク】 title=Call for Media: LISA Pathfinder launch )〕 The mission will test technologies needed for the Evolved Laser Interferometer Space Antenna (eLISA), an ESA gravitational wave observatory planned to be launched in 2034.
The estimated mission cost is €400 million.
==Mission==
LISA Pathfinder will place two test masses in a nearly perfect gravitational free-fall, and will control and measure their relative motion with unprecedented accuracy. The laser interferometer measures the relative position and orientation of the masses 40 centimetres apart to an accuracy of less than 0.01 nanometre,〔(LISA Pathfinder Ready for Launch from Kourou ), ''SpaceRef'', Airbus Defence and Space. November 30, 2015.〕 a technology estimated to be sensitive enough to detect gravitational waves by the follow-on mission, eLISA.
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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