标签: 猎户座

NASA一周新闻(2021.1.7)

Credit:NASA 阿尔忒弥斯1号任务(Artemis I)整体整合(Green Run)点火测试(hot fire test)的进展;一艘商业货运飞船驶离空间站;探索月球尚未探索区域的新想法……最近新闻速递,尽在「本周NASA」! 阿尔忒弥斯1号任务太空发射系统(Space Launch System,SLS)火箭核心级段的整体整合点火测试,计划最早于1月17日进行。点火测试是整体整合系列测试的第8次,也是最后一次计划测试,全部的4个火箭发动机都将点火以模拟发射。NASA在12月20日完成了该系列的第7次测试:全箭演习(wet dress rehearsal)。在该测试过程中,核心级段首次装载了超过70万加仑(265万升)的过冷推进剂,而后被排尽。在阿尔忒弥斯1号任务中,SLS将发射一艘无人猎户座(Ori...

嫦娥五号发射

2020年11月27日 Chang’e 5 Mission Launch Image Credit & Copyright: Jeff Dai (TWAN) Explanation: This Long March-5 rocket blasted off from the Wenchang launch site in southernmost Hainan province on Tuesday November 24, at 4:30 am Beijing Time, carrying China’s Chang’e-5 mission to the Moon. The lunar landing mission is named for the ancien...

阿特拉斯彗星与猎户腰带

2020年11月12日 Comet ATLAS and Orion’s Belt Image Credit & Copyright: Charles Bracken Explanation: With its closest approach to planet Earth scheduled for November 14, this Comet ATLAS (C/2020 M3) was discovered just this summer, another comet found by the NASA funded Asteroid Terrestrial-impact Last Alert System. It won’t get as bright as Come...

猎户座的深度

2020年9月19日 Orion in Depth Illustration Credit & Copyright: Ronald Davison Explanation: Orion is a familiar constellation. The apparent positions of its stars in two dimensions create a well-known pattern on the bowl of planet Earth’s night sky. Orion may not look quite so familiar in this 3D view though. The illustration reconstructs the relative ...

本周NASA速递(2020.6.19 )

阿尔忒弥斯(Artemis)计划取得重要进展;下一个火星车的发射日期越来越近;静音超音速飞行探索的最新进展……最近新闻速递,尽在「本周NASA」! Credit:NASA 帮助第一个阿尔忒弥斯飞行测试发射升空的火箭助推器,正以组建分装的形式从诺斯罗普·格鲁曼公司(Northrop Grumman)位于犹他州普罗蒙特里的制造工厂运往佛罗里达州的肯尼迪航天中心(Kennedy Space Center)。 Credit:NASA 工作人员现在将组装助推器,并最终整合到太空发射系统(Space LaunchSystem,SLS)火箭上,用于在阿尔忒弥斯I号(Artemis I)任务中发射一艘绕月飞行的非载人猎户座(Orion)飞船。这是一系列趋于复杂的任务中的第一项,用于测试猎户座和太空发射系统整体系统,这个整体系统...

212小时长曝光的猎户座

2020 March 29 A 212-Hour Exposure of Orion Image Credit & Copyright: Stanislav Volskiy, Rollover Annotation: Judy Schmidt Explanation: The constellation of Orion is much more than three stars in a row. It is a direction in space that is rich with impressive nebulas. To better appreciate this well-known swath of sky, an extremely long exposure was taken o...

本周NASA速递(20200322)

NASA谈及冠状病毒大流行;通过在线资讯了解NASA动态;猎户座飞船进行了更多的测试……最近新闻速递,尽在「本周NASA」!

点火!猎户座姿态控制发动机的最终测试圆满完成,这对宇航员安全至关重要

图片来源:NASA 在阿尔忒弥斯任务期间,NASA的宇航员乘坐猎户座飞船升空前往月球时,保障他们安全的将会是发射中止系统。猎户座飞船将由太空发射系统发射升空,在发射和升空途中可能会遇到无法预见的紧急情况,而设置发射中止系统的目的就是在紧急事件中将飞船上的宇航员带到安全地点。 2月25日,在诺斯罗普•格鲁曼公司(Northrop Grumman)位于马里兰州埃尔克顿的工厂中,NASA成功完成了姿态控制发动机(attitude control motor,ACM)的测试,姿态控制发动机由诺斯罗普•格鲁曼公司制造,作用是控制猎户座飞船发射中止系统的行驶方向和动力。30秒钟的点火测试是姿态控制发动机的第三次也是最后一次测试,目的是确保它达到从阿尔忒弥斯2号任务(Artemis II)开始执行的载人任务标准。 [rml_...

中波希米亚高地上空的猎户座

2020 February 18 Orion over the Central Bohemian Highlands Image Credit & Copyright: Vojtěch Bauer Explanation: Do you recognize this constellation? Setting past the Central Bohemian Highlands in the Czech Republic is Orion, one of the most identifiable star groupings on the sky and an icon familiar to humanity for over 30,000 years. Orion has looked pre...

穿过猎户座的象限仪座流星雨

2020 January 20 Quadrantid Meteors through Orion Image Credit & Copyright: Petr Horálek Explanation: Why are these meteor trails nearly parallel? Because they were all shed by the same space rock and so can be traced back to the same direction on the sky: the radiant of the Quadrantid Meteor Shower. This direction used to be toward the old constellation ...