terminator 晝夜分界線

terminator 
繁: 晝夜分界線
簡: 昼夜分界线

而這一張照片就捕捉到地球晝夜分界線，這批照片是由指揮官懷斯曼在完成地月轉移軌道點火後，從獵戶座太空船舷窗拍攝地球的景象。

「阿爾忒彌斯二號」太空人傳回首批照片　展現地球極光 (2026年4月4日)。Now新聞，取自https://news.now.com/home/international/player?newsId=642461&hot=1

Another view captured by Wiseman shows the Earth divided by night and day. That frontier between light and darkness is known as the terminator.

Artemis II crew now halfway to Moon as they take ‘spectacular’ image of Earth (2026, Apr 4). BBC. Retrieved from https://www.bbc.com/news/articles/ce8jzr423p9o