保护地球，探索宇宙，发现文明
Melba Roy Mouton (1929-1990) was a mathematician and computer programmer in NASA’s Trajectory and Geodynamics Division, acting as the Assistant Chief of Research Programs. Mouton worked at NASA’s Goddard Space Flight Center, coding computer programs to calculate the trajectories and locations of various aircraft. She also led the group of “human comput...
该图显示了TRAPPIST-1行星系统的样子，基于有关行星直径、质量和与主星距离的可用数据。天文学家将它们命名为行星TRAPPIST-1a、TRAPPIST-1b等等。 影像来源：NASA/JPL-Caltech 五年前，天文学家发现了一个壮观的其他世界集合：TRAPPIST-1系统。 世界各地的报纸都在头版刊登了这一发现：天文学家发现一颗名为TRAPPIST-1的红矮星是一个由七颗地球大小的行星组成的紧密家族的家园。NASA于2017年2月22日公布了该系统。 利用地面和太空望远镜，科学家们发现了迄今为止在太阳之外发现的最不寻常的行星系统之一，并提出了一个诱人的问题：这些星球中是否有一个适合居住——一个适合生命的家园？ 五年后，这些行星仍然神秘莫测。自第一次公布以来，随后的研究表明，TRAPPIST-1行星是...
2022年2月22日 Illustration: An Early Quasar Illustration Credit & License: ESO, M. Kornmesser Explanation: What did the first quasars look like? The nearest quasars are now known to involve supermassive black holes in the centers of active galaxies. Gas and dust that falls toward a quasar glows brightly, sometimes outglowing the entire home galaxy. The qua...
太阳发出中等水平的太阳耀斑，并于美国东部时间2015年10月1日晚上8点13分达到顶峰，美国国家航空航天局（NASA）的太阳动力学天文台（SDO）捕捉到了这一事件的图像。 来源：NASA/SDO NASA已选定两项科学任务：多缝隙太阳探测器（MUSE）任务和HelioSwarm任务，以帮助进一步提高人类对太阳活动、日地关系以及不断变化的空间环境的理解。这两项任务有助于加深人类对宇宙的理解，并提供关键信息以帮助保护宇航员、卫星和通信信号，例如全球定位系统（GPS）。 NASA总部负责科学事务的副局长托马斯·祖尔布钦（Thomas Zurbuchen）表示 ：“MUSE任务和HelioSwarm任务将为太阳大气和空间天气提供更为深入的新见解。这两项任务不仅扩展了NASA其他太阳物理学任务的科学内容，还为了解太阳奥秘...
北京时间2月20日凌晨1时40分（美国东部时间2月19日12时40分），诺斯罗普·格鲁曼公司（Northrop Grumman）的天鹅座货运飞船搭载安塔瑞斯运载火箭，从弗吉尼亚州的沃洛普斯飞行研究所（Wallops Flight Facility）发射升空。 这艘货运飞船给国际空间站带去了3800千克（8300磅）的补给，其中宇航员补给1352千克，科学设备896千克，太空行走装备60千克，车辆硬件1308千克，计算机资源35千克。 Credit:NASA NASA宇航宇员拉贾·查尔在凯拉·巴伦的协助下，在印度洋上空，操作加拿大机械臂成功捕获天鹅座货运飞船。 Credit：NASA 随后位于休斯顿的任务控制中心发送指令，将天鹅座货运飞船安装在团结号节点舱面向地球端口。 天鹅座货运飞船已安装在团结号节点舱面向地球...
2022年2月21日 Barred Spiral Galaxy NGC 6217 Image Credit: NASA, ESA, and the Hubble SM4 ERO Team Explanation: Many spiral galaxies have bars across their centers. Even our own Milky Way Galaxy is thought to have a modest central bar. Prominently barred spiral galaxy NGC 6217, featured here, was captured in spectacular detail in this image taken by the Advanced ...
2022年2月20日 Aurora Over White Dome Geyser Image Credit & Copyright: Robert Howell Explanation: Sometimes both heaven and Earth erupt. Colorful auroras erupted unexpectedly a few years ago, with green aurora appearing near the horizon and brilliant bands of red aurora blooming high overhead. A bright Moon lit the foreground of this picturesque scene, whil...
NASA’s Perseverance Mars rover landed on the Red Planet on Feb. 18, 2021, and took this selfie over a rock nicknamed “Rochette,” on Sept. 10, 2021, the 198th Martian day, or sol of the mission. Two holes can be seen where the rover used its robotic arm to drill rock core samples. See the other selfies Perseverance took on that day! Perseverance uses a camera...
2022年2月19日 Peculiar Galaxies of Arp 273 Image Credit & Copyright: Jason Guenzel Explanation: The spiky stars in the foreground of this backyard telescopic frame are well within our own Milky Way Galaxy. But the two eye-catching galaxies lie far beyond the Milky Way, at a distance of over 300 million light-years. Their distorted appearance is due to grav...
2022年2月18日 Three Clusters in Puppis Image Credit & Copyright: Dave Doctor Explanation: Galactic or open star clusters are young. The swarms of stars are born together near the plane of the Milky Way, but their numbers steadily dwindle as cluster members are ejected by galactic tides and gravitational interactions. Caught in this telescopic frame over th...