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Gravity Probe B
美国空军 · Delta II 7920-10C · 2W 号发射工位 (SLC-2W)
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任务简介
引力探测器B（GP-B）是一项基于卫星的实验，旨在测试广义相对论的两个未经验证的预测：测地效应和惯性系拖曳。该实验通过精确测量位于650公里（400英里）高度、直接飞越两极的地球轨道卫星中四个陀螺仪自旋方向的微小变化来实现。
原文
Gravity Probe B (GP-B) was a satellite-based experiment to test two unverified predictions of general relativity: the geodetic effect and frame-dragging. This was to be accomplished by measuring, very precisely, tiny changes in the direction of spin of four gyroscopes contained in an Earth-orbiting satellite at 650 km (400 mi) altitude, crossing directly over the poles.
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