Glossary term: 天極
Description: 南北兩天極被定義為地球自轉軸與天球的交點。
在地球的北極,北天極總是在正上方;而在地球的南極,南天極總是在正上方。由於地球自轉,北半球的天空似乎圍繞著北天極旋轉,而南半球的天空似乎圍繞著南天極旋轉。北天極的赤緯為+90度,而南天極的赤緯為-90度。
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".
Related Media
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
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
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
莫諾湖上空的北斗七星
Credit: Fabrizio Melandri/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
The Rotating Planet
Credit: Jianfeng Dai/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
故宮星軌
Credit: Stephanie Ziyi Ye/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