保护地球，探索宇宙，发现文明
2022年5月17日 NGC 1316: After Galaxies Collide Image Credit & Copyright: Capture: Greg Turgeon; Processing: Kiko Fairbairn Explanation: Astronomers turn detectives when trying to figure out the cause of startling sights like NGC 1316. Investigations indicate that NGC 1316 is an enormous elliptical galaxy that started, about 100 million years ago, to devour...
Evoking the experimental nature of flight testing and the spirit of aeronautical exploration, Quesst is what NASA is calling its mission to enable supersonic air travel over land. This new moniker – complete with an extra “s” to represent “supersonic” – draws its inspiration from NASA’s long legacy of supersonic flight research. Quesst, which rep...
2022年5月16日 Milky Way over French Alp Hoodoos Image Credit & Copyright: Benjamin Barakat Explanation: Real castles aren’t this old. And the background galaxy is even older. Looking a bit like an alien castle, the pictured rock spires are called hoodoos and are likely millions of years old. Rare, but found around the world, hoodoos form when dense r...
2022年5月15日 Colors of the Moon Image Credit & Copyright: Marcella Giulia Pace Explanation: What color is the Moon? It depends on the night. Outside of the Earth’s atmosphere, the dark Moon, which shines by reflected sunlight, appears a magnificently brown-tinged gray. Viewed from inside the Earth’s atmosphere, though, the moon can appear quit...
2022年5月14日 Ice Halos by Moonlight Image Credit & Copyright: Alan Dyer, Amazingsky.com, TWAN Explanation: An almost full moon on April 15 brought these luminous apparitions to a northern spring night over Alberta Canada. On that night, bright moonlight refracted and reflected by hexagonal ice crystals in high clouds created a complex of halos and arcs mo...
This new NASA Hubble Space Telescope image spotlights the giant elliptical galaxy, UGC 10143, at the heart of galaxy cluster, Abell 2147, about 486 million light-years away in the head of the serpent, the constellation Serpens. UGC 10143 is the biggest and brightest member of Abell 2147, which itself may be part of the much larger Hercules Supercluster of ga...
On May 11, 2022, the National Oceanic and Atmospheric Administration, or NOAA, shared the first images of the Western Hemisphere from its Geostationary Operational Environmental Satellite-T (GOES-T). Later designated GOES-18, the satellite’s Advanced Baseline Imager (ABI) instrument recently captured stunning views of Earth. Launched by NASA on March 1, GOES...
2022年5月13日 The Milky Way’s Black Hole Image Credit: X-ray – NASA/CXC/SAO, IR – NASA/HST/STScI; Inset: Radio – Event Horizon Telescope Collaboration Explanation: There’s a black hole at the center of the Milky Way. Stars are observed to orbit a very massive and compact object there known as Sgr A* (say “sadge-ay-star”...
2022年5月12日 Young Stars of NGC 346 Image Credit: NASA, ESA – acknowledgement: Antonella Nota (ESA/STScI) et al., Explanation: The massive stars of NGC 346 are short lived, but very energetic. The star cluster is embedded in the largest star forming region in the Small Magellanic Cloud, some 210,000 light-years distant. Their winds and radiation sweep ou...
这张光谱图显示了在火星上探测到的最大地震。据估计，这次火震的震级为5级，由NASA的洞察号火星车于2022年5月4日（该任务的1222火星日）发现。 影像来源：NASA/JPL-Caltech/ETH Zurich 据估计，这次火震震级为5级，是在火星上探测到的最大火震。 NASA的洞察号火星车探测到了在火星上观测到的最大火震：估计发生在2022年5月4日，也就是该任务的第1222个火星日。自2018年11月登陆火星以来，洞察号已经探测到1313次以上的火震。此前有记录的最大火震是2021年8月25日探测到的4.2级火震。 法国国家太空研究中心（CNES）提供了一台高灵敏度地震仪，洞察号送往火星，以研究火星的深层内部。当地震波穿过或反射火星地壳、地幔和地核中的物质时，它们会发生变化，地震学家可以通过研究来确定火...