File:July_night_sky_(35972569256).jpg · Wikimedia Commons · See Wikimedia Commons
Also known as celestial dome, celestial vault, firmament
天体表面的观测者看到的大气层或太空的部分
The sky is the atmosphere and space visible above Earth, where clouds, the Moon, and other celestial objects appear. It matters because it contains the air we breathe, protects us from harmful radiation, and plays a central role in weather and climate systems.
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Wikidata facts
- Instance of
- space
- Subclass of
- space
- Image
- Sky over Munich 02.jpg
- Said to be same as
- celestial spheres
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- Commons category
- Sky
- topic's main category
- Category:Sky
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- Earth
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- Wikipedia:Vital articles/Level/4
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Article · 中文
天空是大氣層或太空可被天體表面的觀測者看到的部分。在地球,晴朗的日間,天空看起來是藍色的;在日出和日落時,天空會偏紅色,但其實天空是無色的。对晴朗天空的能见度一般用这个术语来描述。 人可以在天空觀測氣象或天文現象,從而得知天氣變化、時間的流逝或自己的方位。日出日落可知一日中的時間,晚上月亮的盈虧可以知道大概一個月的時間。北斗星可以指示北方。雲的厚度和形狀可以知道會否下雨。 在天空可以欣賞到許多美麗的現象,如彩虹、極光和流星雨等。雀鳥會在天空飛翔。 由于石油等化石性燃料使用的增加而产生的,特别是那些会在燃烧后释放二氧化硫的煤等燃料的影响,自1973年以来,除了欧洲,天空的能见度正在逐步降低。 地球夏季時,陽光直射北回歸線,北半球晝長夜短,北極出現永晝,南極出現永夜。地球冬季時陽光直射南回歸線,北半球晝短夜長,北極出現永夜,南極出現永晝。
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