浮夸
发表于 2025-3-27 00:39:33
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孤僻
发表于 2025-3-27 02:30:40
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臆断
发表于 2025-3-27 05:38:08
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prodrome
发表于 2025-3-27 13:27:32
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玩笑
发表于 2025-3-27 14:48:46
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烧瓶
发表于 2025-3-27 19:01:24
The Celestial Sphere,The Greek philosopher Ptolemy summarised the ancient view of the structure of the Universe in about 140 AD. This view placed the Earth at the centre of the Universe with the Sun, Moon, planets and stars attached to crystal spheres, concentrically arranged, that revolved about the Earth.
职业
发表于 2025-3-28 00:18:55
Modern Developments in Instrumentation,Astronomy may be the oldest science, but astronomers are very modern people. They have been quick to exploit the developing technology in applying new techniques and instrumentation to the study of the Universe.
证实
发表于 2025-3-28 03:56:22
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incredulity
发表于 2025-3-28 10:12:22
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Conserve
发表于 2025-3-28 11:05:18
Electromagnetic Radiation,Apart from meteorites and a few hundred kilograms of lunar rock samples, all our information about the physical Universe comes to us via electromagnetic radiation. Visible light is just one form of this radiation.