來自獵戶座的 Earthset
Earthset from Orion
發表日期:2024-11-20
在這張 2022 年 11 月 21 日拍攝的太空快照中,十億人即將消失。在阿耳特彌斯一號任務的第六天,從出艙的獵戶座飛船上的外接相機看到,他們的家園世界正在月球明亮邊緣的背後落下。獵戶座號正以動力飛越月球,飛到距離月球表面不到 130 公里的地方。飛越過程中獲得的速度被用來到達遙遠的繞月逆行軌道。該軌道之所以被認為是遙遠的,是因為它距離月球還有 9 . 2 萬公里;之所以被認為是逆行的,是因為太空飛行器的執行方向與月球繞地球執行的方向相反。獵戶座於 11 月 25 日進入遙遠的逆行軌道。圍繞月球擺動,獵戶座號於 11 月 28 日到達離地球的最大距離(略超過 40 萬公里),超過了阿波羅 13 號創下的人類太空探索最遙遠太空飛行器的紀錄。阿耳特彌斯二號任務將搭載 4 名宇航員繞月飛行並返回,計劃於 2025 年 9 月前發射。
原文:ght billion people are about to disappear in this snapshot from space taken on 2022 November 21. On the sixth day of the Artemis I mission, their home world is setting behind the Moon's bright edge as viewed by an external camera on the outbound Orion spacecraft. Orion was headed for a powered flyby that took it to within 130 kilometers of the lunar surface. Velocity gained in the flyby maneuver was used to reach a distant retrograde orbit around the Moon. That orbit is considered distant because it's another 92,000 kilometers beyond the Moon, and retrograde because the spacecraft orbited in the opposite direction of the Moon's orbit around planet Earth. Orion entered its distant retrograde orbit on November 25. Swinging around the Moon, Orion reached a maximum distance (just over 400,000 kilometers) from Earth on November 28, exceeding a record set by Apollo 13 for most distant spacecraft designed for human space exploration. The Artemis II mission, carrying 4 astronauts around the moon and back again, is scheduled to launch no earlier than September 2025.
※ 本文由萌芽機器人自動轉貼自每日一天文圖(Astronomy Picture of the Day,APOD),原文為英文,正體中文是透過 DeepL 翻譯及 OpenCC 進行自動處理,內容僅供參考,若有任何錯誤之處還請見諒!
關於每日一天文圖:每日一天文圖網站是美國國家航空暨太空總署與密西根理工大學提供的服務,網站每天提供一張影像或圖片,並由天文學家撰寫扼要說明其特別之處。