保护地球，探索宇宙，发现文明
2020年8月26日 Cygnus Skyscape Image Credit & Copyright: Alistair Symon Explanation: In brush strokes of interstellar dust and glowing hydrogen gas, this beautiful skyscape is painted across the plane of our Milky Way Galaxy near the northern end of the Great Rift and the constellation Cygnus the Swan. Composed using 22 different images and over 180 hours o...
2020年8月25日 Visualization: A Black Hole Accretion Disk Visualization Credit: NASA’s Goddard Space Flight Center, Jeremy Schnittman Explanation: What would it look like to circle a black hole? If the black hole was surrounded by a swirling disk of glowing and accreting gas, then the great gravity of the black hole would deflect light emitted by the disk to mak...
2020年8月24日 Crescent Moon HDR Image Credit & Copyright: Miguel Claro (TWAN, Dark Sky Alqueva) Explanation: How come the crescent Moon doesn’t look like this? For one reason, because your eyes can’t simultaneously discern bright and dark regions like this. Called earthshine or the da Vinci glow, the unlit part of a crescent Moon is visible but...
迈进美国下一次宇航员发射目标；又一次成功的空间站补给任务；美国国家航空日（National Aviation Day）对飞行员进行表彰认可……最近新闻速递，尽在「本周NASA」！ NASA的SpaceX第一次载人飞行任务（Crew-1）飞往国际空间站的计划发射时间在10月23日或之后。SpaceX载人运输系统的NASA认证将允许SpaceX定期发射前往空间站的载人飞行任务，这结束了NASA对俄罗斯的唯一依赖。 8月18日，日本宇宙航空研究开发机构（Japan Aerospace Exploration Agency）的HTV-9货运飞船在3个月的停留后离开了国际空间站。HTV-9提供了大约4吨的补给和实验，包括用于升级电源系统的新型锂离子电池。 NASA在8月19日庆祝了美国国家航空日，对飞行员和机组人员的技术...
This image from the NASA/ESA Hubble Space Telescope features the spectacular galaxy NGC 2442, nicknamed the Meathook galaxy owing to its extremely asymmetrical and irregular shape. This galaxy was host to a supernova explosion spotted in March 2015, known as SN 2015F, that was created by a white dwarf star. The white dwarf was part of a binary star system an...
2020年8月23日 The Helix Nebula from Blanco and Hubble Image Credit: C. R. O’Dell, (Vanderbilt) et al. ESA, NOAO, NASA Explanation: How did a star create the Helix nebula? The shapes of planetary nebula like the Helix are important because they likely hold clues to how stars like the Sun end their lives. Observations by the orbiting Hubble Space Telescope ...
2020年8月22日 Yogi And Friends In 3D Image Credit & Copyright: IMP Team, JPL, NASA Explanation: From July of 1997, a ramp from the Pathfinder lander, the Sojourner robot rover, airbags, a couch, Barnacle Bill and Yogi Rock appear together in this 3D stereo view of the surface of Mars. Barnacle Bill is the rock just left of the solar-paneled Sojourner. Yogi...
2020年8月21日 Unwinding M51 Image Credit & Copyright: Data – Hubble Heritage Project, Unwinding – Paul Howell Explanation: The arms of a grand design spiral galaxy 60,000 light-years across are unwound in this digital transformation of the magnificent 2005 Hubble Space Telescope portrait of M51. In fact, M51 is one of the original spiral nebula...
The crew aboard the International Space Station spotted Hurricane Genevieve off Mexico’s Pacific coast on Aug. 19, 2020. NASA’s Suomi NPP satellite also kept an eye on Hurricane Genevieve overnight and provided infrared imagery to forecasters who were monitoring the storm’s strength, structure and size. Because Genevieve is close to the coast of ...
We’re celebrating National Aviation Day! After all, we are the National Aeronautics and Space Administration. Aviation and aeronautics are as much a part of our mission as space travel. This visualization is generated from a supercomputer simulation of the X-57 “Maxwell” electric experimental aircraft. Just as electric cars are becoming more and more c...