保护地球，探索宇宙，发现文明
2022年5月11日 Gravity’s Grin Image Credit: X-ray – NASA / CXC / J. Irwin et al. ; Optical – NASA/STScI Explanation: Albert Einstein’s general theory of relativity, published over 100 years ago, predicted the phenomenon of gravitational lensing. And that’s what gives these distant galaxies such a whimsical appearance, seen through t...
Nina Wang has more than a decade of experience in financial reporting and analysis, financial statement audits, and internal controls. Currently, she is an accountant in the Data Analysis Branch within the Office of the Chief Financial Officer and on a one-year detail as a Program Analyst in the Resources Management Office within the Space Technology Mission...
2022年1月15日，洪加汤加-洪加哈帕伊火山喷发时，向全世界发出了大气冲击波、音爆和海啸波。现在，科学家们发现火山的影响也到达了太空。 通过分析来自NASA电离层连接探测器（ICON）和欧洲航天局（ESA）Swarm卫星的数据，科学家们发现，在火山爆发后的几个小时内，飓风风速和不寻常的电流在电离层（地球在太空边缘的带电上层大气层）形成。 2022年1月15日，洪加汤加-洪加哈帕伊火山爆发，造成了许多影响，其中一些在此处进行了说明，在全世界乃至太空都能感受到这些影响。其中一些影响，如极端风和异常电流，由NASA的ICON任务和ESA（欧洲航天局）的Swarm探测到。图像不按比例缩放。 影像来源：NASA’s Goddard Space Flight Center/Mary Pat Hrybyk-Keith 加州...
2022年5月10日 NGC 6334: The Cat’s Paw Nebula Image Credit & Copyright: Stefan Steve Bemmerl & Team Wolfatorium (Hakos/Namibia) Explanation: Nebulas are perhaps as famous for being identified with familiar shapes as perhaps cats are for getting into trouble. Still, no known cat could have created the vast Cat’s Paw Nebula visible toward the...
NASA astronaut Jessica Watkins floats in the International Space Station’s cupola, a direct nadir viewing window from which Earth and celestial objects are visible. Watkins reported for duty in August 2017 and completed two years of training as an astronaut candidate. Her astronaut candidate training included scientific and technical briefings, intensive ins...
影像来源：NASA/JPL-Caltech (left), NASA/ESA/CSA/STScI (right) NASA的詹姆斯·韦伯太空望远镜上的所有四个科学仪器均已校准完毕，之前展示天文台全视野的工程图像所示。现在，我们仔细看一下这幅图像，聚焦于韦伯最冷的仪器：中红外仪器，简称MIRI。 MIRI测试图像（7.7微米）显示了大麦哲伦星云的一部分。银河系的这个小卫星星系提供了一个稠密的恒星场来测试韦伯的性能表现。 这张 MIRI 特写照片与NASA斯皮策太空望远镜的红外阵列相机（8.0 微米）拍摄的同一目标的旧图像进行了比较。退役的斯皮策望远镜是NASA的大天文台之一，也是第一个提供近红外和中红外宇宙高分辨率图像的望远镜。韦伯凭借其明显更大的主镜和改进的探测器，将使我们能够以更高的清晰度看到红外天空，从...
2022年5月9日 A Martian Eclipse: Phobos Crosses the Sun Video Credit: NASA, JPL-Caltech, ASU MSSS, SSI Explanation: What’s that passing in front of the Sun? It looks like a moon, but it can’t be Earth’s Moon, because it isn’t round. It’s the Martian moon Phobos. The featured video was taken from the surface of Mars a month ago by th...
2022年5月8日 Spiral Galaxy NGC 1512: The Inner Rings Image Credit: NASA, ESA, Hubble Space Telescope Explanation: Most galaxies don’t have any rings — why does this galaxy have two? To begin, the bright band near NGC 1512’s center is a nuclear ring, a ring that surrounds the galaxy center and glows brightly with recently formed stars. Most sta...
2022年5月7日 Firefall by Moonlight Image Credit & Copyright: Tara Mostofi Explanation: On certain dates in February, an elusive firefall can be spotted at sunset in Yosemite National Park, when water flows, the weather cooperates and the direction to the setting Sun is just right. Often photographed from vantage points below, at the right moment the park&#...
The SpaceX Crew Dragon Endurance spacecraft is seen shortly after it landed with NASA astronauts Raja Chari, Kayla Barron, Tom Marshburn, and European Space Agency astronaut Matthias Maurer aboard. The craft splashed down in the Gulf of Mexico, off the coast of Tampa, Florida, Friday, May 6, 2022. Maurer, Marshburn, Chari, and Barron are returning after 177 ...