突然 发表于 2025-3-21 16:07:27

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Thyroxine 发表于 2025-3-21 21:24:44

Origin and Evolution of Interplanetary Objectsdifferential nongravitational forces shows that a collision of a cometary satellite with its primary is a likely outcome. Thus double nuclei may possibly explain these rare but extreme outbrusts. Statistics suggest, however that most comet splitting and comet outbursts represent instrinsic activities in extremely non-homogeneous nuclei.

Volatile-Oils 发表于 2025-3-22 04:21:18

Mass Loss Phenomenaal work on mass loss from stars, the possible of mass loss is mentioned in several places in ICS and I shll mention these and other aspects of Eddington’s work which are relevant to our present interest.

Engaged 发表于 2025-3-22 06:19:34

Solar Luminosity Variations.1%. Direct observations of teh 11-year or longer variantions are more difficult but there is some evidence for secular trends below about 0.4% amplitude over the 14-year period of modern sampling. Ongoing photometric programs suggest that luminosity changes exceeding 1% may have been detected in yound, chromospherically active stars.

吹牛大王 发表于 2025-3-22 10:42:44

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molest 发表于 2025-3-22 15:23:20

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Hdl348 发表于 2025-3-22 18:37:09

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correspondent 发表于 2025-3-23 00:27:49

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梯田 发表于 2025-3-23 04:20:46

Highlights of Astronomy978-94-009-7110-3Series ISSN 2352-3328 Series E-ISSN 2352-2178

Allowance 发表于 2025-3-23 08:19:55

2352-3328 Overview: 978-90-277-1565-4978-94-009-7110-3Series ISSN 2352-3328 Series E-ISSN 2352-2178
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查看完整版本: Titlebook: Highlights of Astronomy; As Presented at the Richard M. West (General Secretary of the Union) Book 1983 International Astronomical Union 1