惊奇
发表于 2025-4-1 02:56:35
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演讲
发表于 2025-4-1 09:16:27
Book 1978unding the sun shows beyond doubt. Numerous stellar features, and methods of their exploration, ensue specifically from the one but widespread property, the binary nature. Stellar masses are basic quantities for the theory of stellar structure and evolution, and they are ob tained from binary-star
声明
发表于 2025-4-1 13:17:03
When Double-Star Research Began, more neighboring stars easily separated by the naked eye. On the other hand, the well-known naked-eye pair Mizar and Alcor in the Big Dipper received separate names, probably because their difference of brightness did not make them appear as a ‘pair’ of stars.