保护地球，探索宇宙，发现文明
2022年5月21日 Planetary Nebula Abell 7 Image Credit & Copyright: Donald Waid, Ron Dilulio Explanation: Very faint planetary nebula Abell 7 is some 1,800 light-years distant, just south of Orion in planet Earth’s skies in the constellation Lepus, The Hare. Surrounded by Milky Way stars and near the line-of-sight to distant background galaxies, its gen...
A United Launch Alliance Atlas V rocket with Boeing’s CST-100 Starliner spacecraft aboard launched from Space Launch Complex 41, Thursday, May 19, 2022, at Cape Canaveral Space Force Station in Florida. Boeing’s Orbital Flight Test-2 (OFT-2) is Starliner’s second uncrewed flight test and will dock to the International Space Station as part of NASA’s Co...
2022年5月20日 A View from Earth’s Shadow Image Credit & Copyright: Maxime Oudoux Explanation: This serene sand and skyscape finds the Dune of Pilat on the coast of France still in Earth’s shadow during the early morning hours of May 16. Extending into space, the planet’s dark umbral shadow covered the Moon on that date. From that location...
A United Launch Alliance Atlas V rocket with Boeing’s CST-100 Starliner spacecraft aboard is illuminated by spotlights on the launch pad at Space Launch Complex 41 ahead of the Orbital Flight Test-2 mission in this image taken on Wednesday, May 18, 2022. Boeing’s Orbital Flight Test-2 will be Starliner’s second uncrewed flight test and will dock to the Inter...
NASA的哈勃太空望远镜完成了近30年的马拉松比赛，校准了40多个时空“里程碑”，以帮助科学家精确测量宇宙的膨胀率——这是一项曲折的探索。 这组来自NASA哈勃太空望远镜的 36 幅图像展示了这些特征星系，它们都是造父变星和超新星的宿主。 这两种天体现象都是天文学家用来确定天文距离的重要工具，并已被用于改进我们对哈勃常数（宇宙膨胀率）的测量。 这张照片中显示的星系（从顶行，左行到底行，右行）是：NGC 7541，NGC 3021，NGC 5643，NGC 3254，NGC 3147，NGC 105，NGC 2608，NGC 3583，NGC 3147，Mrk 1337，NGC 5861，NGC 2525，NGC 1015，UGC 9391，NGC 691，NGC 7678，NGC 2442，NGC 5468，N...
2022年5月19日 A Digital Lunar Eclipse Image Credit & Copyright: Michael Cain Explanation: Recorded on May 15/16 this sequence of exposures follows the Full Moon during a total lunar eclipse as it arcs above treetops in the clearing skies of central Florida. A frame taken every 5 minutes by a digital camera shows the progression of the eclipse over three ho...
This new NASA Hubble Space Telescope image captures the central region of the gigantic elliptical galaxy NGC 474. Located some 100 million light-years from Earth, NGC 474 spans about 250,000 light-years across – that’s 2.5 times larger than our own Milky Way galaxy! Along with its enormous size, NGC 474 has a series of complex layered shells that surround it...
2022年5月18日 A Jewel on the Flower Moon Image Credit & Copyright: Tomas Slovinsky Explanation: Cloudy skies plagued some sky watchers on Sunday as May’s Full Flower Moon slipped through Earth’s shadow in a total lunar eclipse. In skies above Chile’s Atacama desert this telephoto snapshot still captured an awesome spectacle though. Seen t...
Dr. Kartik Sheth’s career spans academia, non-profits, and government. For the past seven years, Sheth has been a program scientist in both the Astrophysics and Earth Science Divisions at NASA, overseeing space missions, and research and development programs in cutting-edge technology and working towards some of the United Nations’ sustainable de...
在2022年4月24日（该任务的第1211个火星日），洞察号拍摄了这张覆盖灰尘的太阳能电池板的照片。 影像来源：NASA/JPL-Caltech NASA的洞察号火星车正在逐渐失去动力，预计将在今年夏天晚些时候结束科学运行。洞察号的团队预计，到12月，火星车将停止工作，迄今为止洞察号已探测到1300多次火星地震——最近一次是发生在5月4日的5级火星地震——并确定了火星上的地震多发区域。 从这些地震中收集的信息使科学家能够测量火星地壳、地幔和地核的深度和组成。此外，洞察号（利用地震调查、大地测量和热传输进行内部探测的简称）记录了宝贵的天气数据，并研究了火星古老的残余磁场。 “洞察号改变了我们对岩石行星内部的理解，并为未来的任务奠定了基础。”NASA行星科学部主任洛里·格拉斯说。“我们可以将我们所了解的火星内部结构...