保护地球，探索宇宙，发现文明
2021年01月29日 North American Nightscape Composite Image Credit & Copyright: Liron Gertsman Explanation: On January 21, light from the Moon near first quarter illuminated the foreground in this snowy mountain and night scene. Known as The Lions, the striking pair of mountain peaks are north of Vancouver, British Colombia, Canada, North America, planet Eart...
2021年01月28日 Messier 66 Close Up Image Credit: NASA, ESA, Hubble; Processing & Copyright: Leo Shatz Explanation: Big, beautiful spiral galaxy Messier 66 lies a mere 35 million light-years away. The gorgeous island universe is about 100 thousand light-years across, similar in size to the Milky Way. This reprocessed Hubble Space Telescope close-up view spa...
2021年01月27日 The Vertical Magnetic Field of NGC 5775 Image Credit: NRAO, NASA, ESA, Hubble; Processing & Text: Jayanne English (U. Manitoba) Explanation: How far do magnetic fields extend up and out of spiral galaxies? For decades astronomers knew only that some spiral galaxies had magnetic fields. However, after NRAO’s Very Large Array (VLA) radio...
2021年01月26日 Central NGC 1316: After Galaxies Collide Image Credit: NASA, ESA, Hubble; Processing & Copyright: Daniel Nobre Explanation: How did this strange-looking galaxy form? Astronomers turn detectives when trying to figure out the cause of unusual jumbles of stars, gas, and dust like NGC 1316. Inspection indicates that NGC 1316 is an enormous ellip...
A powerful new antenna has been added to the NASA Space Communications and Navigation’s Deep Space Network (DSN), which connects us to the space robots exploring our solar system. Called Deep Space Station 56, or DSS-56, the dish is now online and ready to communicate with a variety of missions, including NASA’s Perseverance rover when it lands on the Red Pl...
“绿色运行”（Green Run）点火测试的进展；猎户座（Orion）飞船的发射前准备工作仍在继续；小型太阳结构的一个新发现……最近新闻速递，尽在「本周NASA」！ Credit：NASA 1月16日太空发射系统（Space Launch System，SLS）火箭核心级点火测试后的初步审查显示，火箭的硬件状况良好。官方表示，计划持续8分钟的测试在点火1分钟后熄火的原因，在于为地面测试而设计的保守参数，目的是确保火箭核心级安装到B-2试验台（B-2 Test Stand）上时的安全性；若在实际飞行中发生这种情况，火箭将继续飞行。团队正在评估SLS的下一步计划，SLS将在阿尔忒弥斯1号（Artemis I）任务中向月球发射一艘无人猎户座飞船。 与此同时，猎户座飞船向阿尔忒弥斯1号登月任务又迈近了一步：肯尼迪航天中...
2021年01月25日 Southern Cross over Chilean Volcano Image Credit & Copyright: Tomáš Slovinský Explanation: Have you ever seen the Southern Cross? This famous four-star icon is best seen from Earth’s Southern Hemisphere. The featured image was taken last month in Chile and captures the Southern Cross just to the left of erupting Villarrica, one of the ...
Located in the constellation of Virgo (The Virgin), around 50 million light-years from Earth, the galaxy NGC 4535 is truly a stunning sight to behold. Despite the incredible quality of this image, taken from the NASA/ESA Hubble Space Telescope, NGC 4535 has a hazy, somewhat ghostly, appearance when viewed from a smaller telescope. This led amateur astronomer...
NASA and Samaritans Purse DC-8 aircrafts parked on the ramp in front of NASA’s Armstrong Flight Research Center Building 703. Credits: NASA Photo / Lauren Hughes NASA has once again joined forces with the community in the continuing effort to fight COVID-19. The agency provided specialized ground support on Jan. 11 for Samaritan’s Purse, enabling the aid org...
2021年01月24日 Massive Nearby Spiral Galaxy NGC 2841 Image Credit: NASA, ESA, Hubble, Subaru; Composition & Copyright: Roberto Colombari Explanation: It is one of the more massive galaxies known. A mere 46 million light-years distant, spiral galaxy NGC 2841 can be found in the northern constellation of Ursa Major. This sharp view of the gorgeous island uni...