2026年1月24日
Earthset from Orion
Image Credit: NASA, Artemis 1
Explanation: Eight 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. Swinging around the Moon, Orion reached a maximum distance (just over 400,000 kilometers) from Earth on 2022 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 due to launch as early as February 6.
Tomorrow’s picture: doomed moon
猎户座飞船的地球落下景象
影像提供: NASA, Artemis 1
说明: 八十亿人即将在这张拍摄于2022年11月21日的太空快照中消失。在阿尔忒弥斯一号任务的第六天，从即将离开地球的猎户座飞船的外部摄影机拍摄到，他们的家园地球正从月球明亮的边缘后方缓缓落下。猎户座飞船正准备进行一次动力飞掠，将其带到距月球表面130公里的距离。飞掠操作中获得的速度被用来进入一个远距逆行轨道环绕月球。该轨道被认为是远距的，因为它在月球之外92,000公里，逆行是因为飞船的轨道方向与月球绕地球的轨道方向相反。在环绕月球飞行的过程中，猎户座飞船于2022年11月28日到达了距地球超过400,000公里的最大距离，打破了阿波罗13号最远载人飞船的飞行距离纪录，该任务飞船是为人类太空探索而设计。阿尔忒弥斯二号任务，将载着四名宇航员环绕月球并返回，最快将于2月6日发射。
明日的图片: doomed moon
