保护地球，探索宇宙，发现文明
NASA’s OSIRIS-REx is ready for touchdown on asteroid Bennu. On Aug. 11, the mission will perform its “Matchpoint” rehearsal – the second practice run of the Touch-and-Go (TAG) sample collection event. The rehearsal will be similar to the Apr. 14 “Checkpoint” rehearsal, which practiced the first two maneuvers of the descent, but this time the spacecraft...
2020年8月12日 The Shifting Tails of Comet NEOWISE Image Credit & Copyright: Ignacio Llorens Explanation: Keep your eye on the ion tail of Comet NEOWISE. A tale of this tail is the trail of the Earth. As with all comets, the blue ion tail always points away from the Sun. But as Comet C/2020 F3 (NEOWISE) rounded our Sun, its ion tail pointed in slightly diff...
八月会发生什么?这个月有很多机会来看月亮和行星摆POS。另外，流星来了! Credit：NASA 翻译：林子杰 8月1日，日落后，月亮和木星以及低在东南的土星形成一个可爱的三角形。在南部当地时间晚上11点左右，一整晚都可以看到这仨直上到最高点。如果你错过了，还有另一个机会，在月底的8月28，月亮在会其轨道上回旋尔后加入行星对。 Credit：NASA 8月9日，火星将出现，超级接近黎明前的月球。向南仰望天空，你不会错过它的。火星是明亮的微红色光点，正好位于月亮的右边。天气允许的话，这应该是一个由昴宿星、猎户座、阿鲁迪巴和在东南方向的金星共处一堂美丽的天空。 Credit：NASA 8月15日，日出前一小时，在东边寻找金星，离新月只有几个手指宽。如果你在天空变得太亮之前看一眼，那天早上，你会看到这俩被一圈明亮的星...
2020年8月11日 Churning Clouds on Jupiter Image Credit & License: NASA/JPL-Caltech/SwRI/MSSS; Processing: Kevin M. Gill Explanation: Where is Jupiter’s ammonia? Gaseous ammonia was expected to be seen in Jupiter’s upper atmosphere by the orbiting Juno spacecraft — but in many clouds is almost absent. Recent Juno data, however, gives some c...
NASA的ARIA团队与新加坡地球天文台合作，利用卫星数据绘制了贝鲁特大爆炸可能造成的破坏程度。暗红色像素代表最严重的破坏。橙色区域受损程度中等，黄色区域受损程度较轻。每个彩色像素代表一个30米(33码)的区域。这张地图包含了由ESA(欧洲航天局)处理的修改过的哥白尼哨兵数据，并由NASA喷气推进实验室、加州理工学院和新加坡地球天文台的ARIA团队的科学家分析。位于加利福尼亚州帕萨迪纳市的加州理工学院为NASA管理喷气推进实验室。有关ARIA的更多信息，请访问：https://aria.jpl.nasa.gov/ 影像来源：NASA/JPL-Caltech/Earth Observatory of Singapore/ESA 美国国家航空航天局（NASA）的高级快速成像和分析（ARIA）团队与新加坡地球天文台合...
The barred spiral galaxy known as NGC 4907 shows its starry face from 270 million light-years away to anyone who can see it from the Northern Hemisphere. This is a new image from the NASA/ESA Hubble Space Telescope of the face-on galaxy, displaying its beautiful spiral arms, wound loosely around its central bright bar of stars. Shining brightly below the gal...
2020年8月10日 Perseids from Perseus Image Credit & Copyright: Petr Horálek Explanation: Where are all these meteors coming from? In terms of direction on the sky, the pointed answer is the constellation of Perseus. That is why the meteor shower that peaks tomorrow night is known as the Perseids — the meteors all appear to came from a radiant toward P...
2020年8月9日 The Origin of Elements Image Credit & License: Wikipedia: Cmglee; Data: Jennifer Johnson (OSU) Explanation: The hydrogen in your body, present in every molecule of water, came from the Big Bang. There are no other appreciable sources of hydrogen in the universe. The carbon in your body was made by nuclear fusion in the interior of stars, as wa...
2020年8月8日 Crescent Saturn Image Credit: NASA, ESA, SSI, Cassini Imaging Team Explanation: From Earth, Saturn never shows a crescent phase. But when viewed from a spacecraft the majestic giant planet can show just a sunlit slice. This image of crescent Saturn in natural color was taken by the robotic Cassini spacecraft in 2007. It captures Saturn’s ring...
一次历史性试飞安全溅落（splashdown）；未来任务的重要里程碑；纪念一位地球科学战士……最近新闻速递，尽在「本周NASA」！ Credit：NASA “溅落！正如你在屏幕上看到的那样，我们对溅落进行了现场确认！”8月2日，SpaceX奋进号（Endeavour）载人龙飞船（Crew Dragon）在墨西哥湾溅落，安全地将NASA的道格·赫尔利（Doug Hurley）和鲍勃·本肯（Bob Behnken）从历史性的国际空间站（International Space Station）试飞任务中送回了地球，标志着人类太空飞行的新纪元。 Credit：NASA NASA局长吉姆·布里登斯坦（JimBridenstine）说道：“这真是让人兴奋不已的一天，但我们还得记住，这仅仅只是个开始。未来十分乐观，但需要这些...