Indelible
发表于 2025-3-26 21:25:57
The Sky Seen from the Southern Hemisphere,In order to help the reader to understand better the appearance of the sky seen from the southern hemisphere, and the difference from place to place on the Earth’s surface, I shall start by referring briefly to the situation for observers at the equator and at each of the Earth’s poles.
Indent
发表于 2025-3-27 01:27:02
978-1-85233-737-7Springer-Verlag London 2004
阴险
发表于 2025-3-27 05:19:04
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窝转脊椎动物
发表于 2025-3-27 10:17:47
1431-9756 Overview: Provides the fundamental knowledge of the night sky required by all astronomers.Does not rely on the reader owning any expensive equipment, indeed emphasises the necessity of getting to know the night978-1-85233-737-7978-1-85233-898-5Series ISSN 1431-9756 Series E-ISSN 2197-6562
繁荣中国
发表于 2025-3-27 14:25:59
The Constellations,heavenly vault. Some are very bright, others are difficult to make out. If you look carefully you can see that stars are also differently coloured: some are yellow, some white, there are some which are redder, some more orange and even some bluish ones.
justify
发表于 2025-3-27 19:27:25
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cataract
发表于 2025-3-27 23:08:00
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Aesthete
发表于 2025-3-28 03:17:37
The Milky Way,de up of one hundred thousand million (100,000,000,000) stars, some grouped together in clusters, and interstellar matter, dust and gas. All of the components of our Galaxy move around its nucleus. The stars are mostly spread out along spiral arms.
细微差别
发表于 2025-3-28 09:32:21
Celestial Chart,ions. The arrows showing the alignments and extensions, however, make it difficult or even impossible to use them as maps of the sky. In order to overcome these problems, this chapter — essentially one Celestial Chart — includes these maps from a new perspective.
金盘是高原
发表于 2025-3-28 12:27:01
The Sky and the Four Seasons of the Year,of the year for the northern and southern hemispheres. They also show the sky’s appearance at other times and dates, as indicated. The dates in . are outside the seasons indicated; those in . correspond to the times above.