按月归档： 9 月 2023

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史瓦3号彗星碎裂

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 first seen to split into several large pieces during the close-i...

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NGC 7023：鸢尾花星云

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. Still, this deep telescopic image shows off the Iris Nebula&#82...

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武仙大球状星团

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 the Moon absent.” Of course, M13 is now less modestly re...

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墨西哥湾的伊达利亚飓风

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 category 3 storm. Winds measured 205 kilometers (125 miles) per...