2023年9月3日 Comet Schwassmann-Wachmann 3 Fragments Credit: NASA, ESA, H. Weaver (JHU / APL), M. Mutchler and Z. Levay (STScI) Explanation: Periodic comet 73P/Schwassmann-Wachmann 3 has broken up at least twice. A cosmic souffle of ice and dust left over from the early solar system, this comet was firs […]
2023年9月2日 NGC 7023: The Iris Nebula Image Credit & Copyright: Lorand Fenyes Explanation: These cosmic clouds have blossomed 1,300 light-years away in the fertile starfields of the constellation Cepheus. Called the Iris Nebula, NGC 7023 is not the only nebula to evoke the imagery of flowers. Sti
2023年9月1日 The Great Globular Cluster in Hercules Image Credit & Copyright: Serge Brunier, Jean-François Bax, David Vernet OCA/C2PU Explanation: In 1716, English astronomer Edmond Halley noted, “This is but a little Patch, but it shows itself to the naked Eye, when the Sky is serene and th
NASA的詹姆斯·韦伯太空望远镜已经开始研究最著名的超新星之一SN 1987A（超新星1987A）。SN 1987A位于16.8万光年之外的大麦哲伦星云中，自1987年2月被发现以来，近40年来一直是从伽马射线到无线电波长的密集观测目标。
As the International Space Station orbited 261 miles above Earth on Aug. 29, 2023, one of the space station’s external high-definition cameras captured Hurricane Idalia in the Gulf of Mexico. Hurricane Idalia made landfall over the Big Bend region of Florida on the morning of Aug. 30, 2023, as a cat
2023年8月31日 The Crew-7 Nebula Image Credit & Copyright: Michael Seeley Explanation: Not the James Webb Space Telescope’s latest view of a distant galactic nebula, this illuminated cloud of gas and dust dazzled early morning spacecoast skygazers on August 26. The snapshot was taken about 2
In this image from Sept. 5, 1983, Guion “Guy” Bluford checks out the sample pump on the continuous flow electrophoresis system (CFES) experiment in the middeck of the Earth-orbiting space shuttle Challenger. Forty years ago today, he launched from NASA’s Kennedy Space Center in Florida, becoming the
2023年8月30日 Full Moons of August Image Credit & Copyright: Gianni Tumino Explanation: Near perigee, the closest point in its almost moonthly orbit, a Full Moon rose as the Sun set on August 1. Its brighter than average lunar disk was captured in this dramatic moonrise sequence over dense cloud b
Rocky Garcia and Wesley James prepare a weather balloon to collect wind data at NASA’s Armstrong Flight Research Center in Edwards, California, on July 20, 2023. Researchers measured wind at altitudes below 2,000 feet using drones, sensors, weather balloons, and other technology during the Advanced
