保护地球，探索宇宙，发现文明
2022年11月4日 InSight’s Final Selfie Image Credit: NASA, JPL-Caltech, Mars InSight Explanation: The Mars InSight lander returned its first image from the Red Planet’s flat, equatorial Elysium Planitia after a successful touchdown on November 26, 2018. The history making mission to explore the martian Interior using Seismic investigations, geodesy, a...
Since 2015, scientists participating in NASA’s Arctic Boreal Vulnerability Experiment (ABoVE) have been studying the impacts of climate change on Earth’s far northern regions and how those changes are intertwined. As our planet warms, permafrost—layers of soil that have stayed frozen for at least two years—thaws at an accelerating rate. This is changing the ...
2022年11月3日 M33: The Triangulum Galaxy Image Credit & Copyright: Processing – Robert Gendler Data – Hubble Legacy Archive, KPNO, NOIRLab, NSF, Aura, Amateur Sources Explanation: The small, northern constellation Triangulum harbors this magnificent face-on spiral galaxy, M33. Its popular names include the Pinwheel Galaxy or just the Triangulum...
This peculiar portrait from the NASA/ESA Hubble Space Telescope showcases NGC 1999, a reflection nebula in the constellation Orion. NGC 1999 is around 1,350 light-years from Earth and lies near the Orion Nebula, the closest region of massive star formation to Earth. NGC 1999 itself is a relic of recent star formation – it is composed of debris left over from...
2022年11月2日 A Partial Eclipse of an Active Sun Video Credit: Ralf Burkart; h/t Maciej Libert (AG) Explanation: Watch for three things in this unusual eclipse video. First, watch for a big dark circle to approach from the right to block out more and more of the Sun. This dark circle is the Moon, and the video was made primarily to capture this partial solar ec...
这张由NASA毅力号拍摄的带注释图像显示了第一个样品库的位置——火星车将在那里存放一组样品管，以便将来可能送返地球——位于耶泽罗陨石坑的一个叫三岔口的区域。这张照片拍摄于2022年8月29日。 影像来源：NASA/JPL-Caltech NASA的毅力号火星车将在火星上建立第一个样品库。 10月19日，NASA与其合作伙伴欧洲航天局（ESA）签署了一项正式协议，这一史无前例的从火星返回科学选择样本计划迈出了重要一步。这两个机构将着手在火星上建立一个样品管仓库。样品仓库或储藏室将位于三岔口，这是一个位于耶泽罗陨石坑一个古老河流三角洲底部附近的区域。 这个样品仓库将包含从火星表面精心挑选的岩石中提取的样本——这些样本可以帮助讲述耶泽罗陨石坑的历史和火星是如何演变的，甚至可能包含古代生命的迹象。科学家们认为，从三角洲...
Teams at NASA’s Armstrong Flight Research Center in Edwards, California, recently completed stress testing on the Navy’s F/A-18E Super Hornet aircraft from the Naval Air Systems Command (NAVAIR) in Patuxent River, Maryland. The Super Hornet is seen here in a top view from March 2022 while in a wing loading test configuration at Armstrong. Understanding...
2022年11月1日 NGC 6357: The Lobster Nebula Image Credit: CTIO/NOIRLab/DOE/NSF/AURA; Processing: T. A. Rector (U. Alaska Anchorage/NSF’s NOIRLab), J. Miller (Gemini Obs./NSF’s NOIRLab), M. Zamani & D. de Martin (NSF’s NOIRLab) Explanation: Why is the Lobster Nebula forming some of the most massive stars known? No one is yet sure. Cataloged as NGC 6357, the ...
While observing the outer region of the Milky Way galaxy, our Spitzer Telescope captured this infrared image of a cloud of gas and dust that looks like the hollowed-out pumpkins we see every Halloween. Nicknamed the “Jack-o’-Lantern Nebula,” it was likely created by powerful outflows of radiation and particles from a massive O-type star, about 15 to 20 times...