保护地球，探索宇宙，发现文明
This 2018 composite of the Crab Nebula was made with data from the Chandra X-Ray Observatory (blue and white), Hubble Space Telescope (purple), and Spitzer Space Telescope (pink). The star that exploded to create the Crab Nebula was first seen from Earth in 1054 A.D. Since its launch in 1999, Chandra has frequently observed the nebula and x-ray observations ...
2020 May 6 LDN 1471: A Windblown Star Cavity Image Credit: Hubble, NASA, ESA; Processing & License: Judy Schmidt Explanation: What is the cause of this unusual parabolic structure? This illuminated cavity, known as LDN 1471, was created by a newly forming star, seen as the bright source at the peak of the parabola. This protostar is experiencing a stella...
来源：央视新闻 北京时间2020年5月5日18时00分，为我国载人空间站工程研制的长征五号B运载火箭，搭载新一代载人飞船试验船和柔性充气式货物返回舱试验舱，在我国文昌航天发射场点火升空！首飞任务取得圆满成功！ 长征五号B运载火箭主要用于空间站舱段等近地轨道大型航天器发射任务，是在长征五号运载火箭基础上改进研制的新型火箭，根据空间站任务要求新研制了大型整流罩，并对全箭进行了适应性改造。火箭全长约53.7米，芯一级直径5米，捆绑4个直径3. 35米助推器，整流罩长20. 5米、直径5. 2米，采用无毒无污染的液氧、液氢和煤油作为推进剂，起飞质量约849吨，近地轨道运载能力不小于22吨。 新一代载人飞船试验船是为我国空间站及后续载人航天任务研制。与神舟飞船相比，新一代载人飞船体型更大，既能载人也可载货，比如，3名航天...
It’s #TeacherAppreciationWeek and teachers and space travel go hand-in-hand. Teacher-turned-astronaut Joe Acaba taught one year of high school science at Melbourne High School, Florida, and four years of middle school math and science at Dunnellon Middle School, Florida. As an astronaut, Acaba has logged a total of 306 days in space on three flights, f...
这张图片是3幅新近处理过的木卫二图像的其中之一，在卫星冰冷的表面上，你能看到各种地质特征的细节。这张图片显示的区域被称为“混沌过渡”，上面有着已经移动过的物质块以及表面隆起，这可能与木星引力所引发的壳层破裂有关。 图片来源：NASA/喷气推进实验室-加州理工/地外文明探索研究所（Search for Extraterrestrial Intelligence Institute，SETI Institute） 木卫二（Europa）欧罗巴的表面上，满是各式各样的地质景观，包括隆起的脊、带状的路、圆形的小凸顶，以及被地质学家称为“混沌地形”（chaos terrain）的破碎形貌。1990年代后期美国航空航天局（NASA）伽利略号木星探测器（Galileo）所拍摄的3幅图像，近期进行了再次处理，揭示了木卫二表面上...
2020 May 5 Carina in Perspective Image Credit & Copyright: Carlos Kiko Fairbairn Explanation: You need to be in the south, looking south, to see such a sky. And only then if you’re lucky. Just above the picturesque tree is the impressive Carina Nebula, one of the few nebulas in the sky that is visible to the unaided eye. The featured image had to b...
美国航天航空局（NASA）的斯皮策空间望远镜（Spitzer Space Telescope）任务于2020年1月30日结束，在任务结束的5天前，科学家使用望远镜的红外照相机拍摄了一片区域的多张图片，这片区域被称为加利福尼亚星云（California Nebula），星云的命名非常应景，因为斯皮策任务的管理和运行由位于南加州的NASA喷气推进实验室（Jet Propulsion Laboratory，JPL）和加州理工学院（California Institute of Technology，Caltech）负责。上面这幅镶嵌图就是拍摄的多张图像制成的。终其一生，斯皮策拍摄了数百张空间镶嵌图片，而这是其中的最后一张。 在退役前5天，也就是2020年1月25日的时候，NASA的斯皮策空间望远镜拍摄了这张加利福尼亚...
2020 May 4 Earth Flyby of BepiColombo Image Credit & License: ESA, BepiColombo, MTM Explanation: What it would look like to approach planet Earth? Such an event was recorded visually in great detail by ESA’s and JAXA’s robotic BepiColombo spacecraft last month as it swung back past Earth on its journey in to the planet Mercury. Earth can be s...
2020 May 3 A Message from Earth Image Credit: Frank Drake (UCSC) et al., Arecibo Observatory (Cornell U.); License: Arne Nordmann (Wikimedia) Explanation: What are these Earthlings trying to tell us? The featured message was broadcast from Earth towards the globular star cluster M13 in 1974. During the dedication of the Arecibo Observatory – still one ...
Sang Choi has worked for NASA for nearly 40 years. Since beginning work at the Langley Research Center in October 1980, Choi has received 71 awards from the agency. He also received three Nano 50 Awards from the Foresight Instittute for his innovative bionano technology in 2006 and 2007, and was cited as a Nano50 Innovator of the Year in 2008. He won a R...