108. 2022年6月09日 12:30:57 : NGTn795fYM : dnNQNXNkanBCb0U=[1]
Perihelion Shift of Mercury (Gleanings) (クリ)
It is said that magnitude of Sun's gravity acting on orbiting Mercury depends only Sun's mass m and distance r between the two. But in reality, in addition, there will be an effect of Sun's size. Gravity will be slightly greater. Therefore, Mercury's orbit that has left aphelion will be slightly inward (and r will also be shorter), and then, perihelion will be shifted.
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