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Uranus orbiter and probe
The Uranus orbiter and probe, also known as Uranus Pathfinder by the European Space Agency, is a concept study by NASA and ESA on a mission to the planet Uranus. The mission would be a follow-up to Voyager 2's flyby in 1986. Two possibilities for transfer to Uranus have been considered: one, using an Atlas V 551 to launch the spacecraft into a trajectory that will make use of multiple gravity assists from Earth, Venus, and Jupiter,〔 and the other using the Space Launch System to launch the spacecraft directly towards Uranus.〔
==History==
The Uranus orbiter and probe was evaluated in 2010 by the Applied Physics Laboratory, recommended to NASA in 2011 by its (Planetary Science Decadal Survey 2013–2022 ),〔(Vision and Voyages for Planetary Science in the Decade 2013–2022 )〕 as well as evaluated in 2011 and proposed in 2015 to the ESA as the ODINUS mission, which includes twin spacecraft.〔(【引用サイトリンク】 title=The ODINUS Mission )〕 A mission study was conducted which also considered a Neptune orbiter,〔(Uranus and Neptune Orbiter and Probe Concept Studies, Ice Giants Decadal Study )〕 however, for feasibility reasons Neptune was dropped in favor of Uranus. Two white papers on Uranus exploration were also submitted to the Decadal Survey.〔(THE CASE FOR A URANUS ORBITER ), Mark Hofstadter et al.〕〔(THE ATMOSPHERES OF THE ICE GIANTS, URANUS AND NEPTUNE ), Mark Hofstadter et al.〕 The survey listed the Uranus orbiter and probe as the third priority for a Flagship mission class after the MAX-C rover and the Jupiter Europa Orbiter. Both of these missions have since been transformed into other, similar missions, once again leaving the Uranus orbiter as the third priority after the Mars 2020 rover and Europa Multiple-Flyby Mission.
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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