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・ "O" Is for Outlaw
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・ "Ode-to-Napoleon" hexachord
・ "Oh Yeah!" Live
・ "Our Contemporary" regional art exhibition (Leningrad, 1975)
・ "P" Is for Peril
・ "Pimpernel" Smith
・ "Polish death camp" controversy
・ "Pro knigi" ("About books")
・ "Prosopa" Greek Television Awards
・ "Pussy Cats" Starring the Walkmen
・ "Q" Is for Quarry
・ "R" Is for Ricochet
・ "R" The King (2016 film)
・ "Rags" Ragland
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・ ! (disambiguation)
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・ !!Destroy-Oh-Boy!!
・ !Action Pact!
・ !Arriba! La Pachanga
・ !Hero
・ !Hero (album)
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・ !T.O.O.H.!
・ !Women Art Revolution


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Mariner 12 : ウィキペディア英語版
Voyager 2




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''Voyager 2'' is a space probe launched by NASA on August 20, 1977 to study the outer planets. Part of the Voyager program, it was launched 16 days before its twin, ''Voyager 1'', on a trajectory that took longer to reach Jupiter and Saturn but enabled further encounters with Uranus and Neptune.〔 It is the only spacecraft to have ever visited either of the ice giants.
Its primary mission ended with the exploration of the Neptunian system on October 2, 1989, after having visited the Uranian system in 1986, the Saturnian system in 1981, and the Jovian system in 1979. ''Voyager 2'' is now in its extended mission to study the outer reaches of the Solar System and has been operating for . It remains in contact through the Deep Space Network.〔NASA (Voyager - The Interstellar Mission Mission Overview )〕
At a distance of from the Sun as of April 2015,〔 ''Voyager 2'' is one of the most distant human-made objects, along with ''Voyager 1'', ''Pioneer 10'' and ''Pioneer 11''. The probe was moving at a velocity of relative to the Sun as of December 2014 and is traveling through the heliosheath.〔 Upon reaching interstellar space, ''Voyager 2'' is expected to provide the first direct measurements of the density and temperature of the interstellar plasma.
==Mission background==


抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「Voyager 2」の詳細全文を読む



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