File:Webb's_First_Deep_Field.jpg · Wikimedia Commons · See Wikimedia Commons
Also known as space, deep space, exosphere, extra-atmospheric space
宇宙各天體之間的空間
Outer space is the vast emptiness that exists between planets, stars, and other celestial bodies. It matters because understanding it helps us learn about the universe and our place within it.
AI-generated from the Wikipedia summary — may contain errors.
Wikidata facts
- Instance of
- region
- Subclass of
- space
- Image
- Hubble Ultra Deep Field part d.jpg
- Has use
- space colonization
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- Commons category
- Outer space
- topic's main category
- Category:Outer space
- opposite of
- Earth
- topic's main Wikimedia portal
- Portal:Space
- name
- delin
- on focus list of Wikimedia project
- Wikipedia:Vital articles/Level/4
- hashtag
- space
- exact match
- purl.obolibrary.org/obo/ENVO_01000637
- facet of
- universe
- studied by
- space exploration
- used by
- spacecraft
- contains
- space object
Sources (9)
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Article · 中文
外层空间,亦称外太空、宇宙空间,简称空间、外空或太空(英語:outer space),指的是地球大氣層及其他天體之外的虛空區域。 與真空有所不同的是,外太空含有密度很低的物質,以等離子態的氫為主。其中還有電磁輻射、磁場等。理論上,外層空間可能還包含暗物質和暗能量。 外太空與地球大气层並沒有明確的界線,因為大氣隨著海拔增加而逐漸變薄。假設大氣層温度固定,大氣壓會由海平面的大約1013毫巴,隨著高度增加而呈指數化減少至零為止。 国际航空联合会定義在100公里的高度為卡門線,為現行大氣層和太空的界線定義。美國認定到達海拔80公里的人為太空人,在太空船重返地球的過程中,120公里是空氣阻力開始發生作用的界線。
Abstract from DBpedia / Wikipedia · CC BY-SA
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