Glossary term: 天球
Description: 天球是一個假想的空心球殼，其半徑無限大，可以地球、太陽或任何便利的地方為中心。在表觀上，天體附著在天球內部，而行星、太陽和月球在天球上緩慢移動。天球這一概念被用於球面坐標系。
由於地球的自轉，天球在表觀上每天轉動一週。
Related Terms:
See this term in other languages
Term and definition status: The original definition of this term in English have been approved by a research astronomer and a teacher The translation of this term and its definition is still awaiting approval
This is an automated transliteration of the simplified Chinese translation of this term
The OAE Multilingual Glossary is a project of the IAU Office of Astronomy for Education (OAE) in collaboration with the IAU Office of Astronomy Outreach (OAO). The terms and definitions were chosen, written and reviewed by a collective effort from the OAE, the OAE Centers and Nodes, the OAE National Astronomy Education Coordinators (NAECs) and other volunteers. You can find a full list of credits here. All glossary terms and their definitions are released under a Creative Commons CC BY-4.0 license and should be credited to "IAU OAE".
If you notice a factual or translation error in this glossary term or definition then please get in touch.
Related Media
博特爾四級光汙染下的南半球星軌
Credit: Slamat Riyadi/IAU OAE (CC BY 4.0)
License: CC-BY-4.0 Creative Commons 姓名標示 4.0 國際 (CC BY 4.0) icons
北斗七星和新智彗星 C2020 F3
Credit: 喬爾賈·霍弗/國際天文學聯合會教育辦公室 (CC BY 4.0)
License: CC-BY-4.0 Creative Commons 姓名標示 4.0 國際 (CC BY 4.0) icons
拉西亞的南天
Credit: José Rodrigues/IAU OAE (CC BY 4.0)
License: CC-BY-4.0 Creative Commons 姓名標示 4.0 國際 (CC BY 4.0) icons
阿塔卡馬沙漠的美麗夜晚
Credit: Uwe Reichert/IAU OAE (CC BY 4.0)
License: CC-BY-4.0 Creative Commons 姓名標示 4.0 國際 (CC BY 4.0) icons
用撒丁島射電望遠鏡 SRT 觀測北斗七星
Credit: Antonio Finazzi/IAU OAE (CC BY 4.0)
License: CC-BY-4.0 Creative Commons 姓名標示 4.0 國際 (CC BY 4.0) icons
