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The Halley Armada is the generally accepted and popularly used name of five space probes sent to examine Halley's Comet during its 1986 sojourn through the inner Solar System, connected with apparition "1P/1982 U1". The armada consisted of one probe from the European Space Agency, two probes that were joint projects between the Soviet Union and France and two probes from the Institute of Space and Astronautical Science of Japan. Without the measurements from the other space probes, Giotto's closest distance would have been 4,000 km instead of the 596 km achieved. == Main space probes == Probes involved (in order of closest approach): *Giotto, the first space probe to get close-up color images of the nucleus of a comet. (ESA) *Vega 1, which dropped a balloon probe and lander on Venus before going on to Halley. (USSR/France Intercosmos) *Vega 2, which dropped a balloon probe and lander on Venus before going on to Halley. (USSR/France Intercosmos) *Suisei, also known as PLANET-A. Data from Sakigake was used to improve upon Suisei for its dedicated mission to study Halley. (ISAS) *Sakigake, Japan's first probe to leave the Earth system, mainly a test of interplanetary mission technology. (ISAS) 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「Halley Armada」の詳細全文を読む スポンサード リンク
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