Interplanetary space
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The region of space in which the planets of the solar system exist. The solar wind, the plasma that blows out from the Sun, flows at an average speed of 450 km per second. The solar wind is thought to blow in a spherical region of space approximately 100 astronomical units from the Sun, and this region is sometimes called the heliosphere. Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information |
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太陽系の惑星が存在している空間領域。太陽から吹き出すプラズマ，太陽風が平均秒速 450kmで流れている。太陽風は，太陽からおよそ 100天文単位の球状の空間領域で吹いているものと考えられ，この範囲は太陽圏と呼ばれることがある。
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