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...
2022年3月31日 Exploring the Antennae Image Credit & Copyright: Dietmar Hager, Eric Benson Explanation: Some 60 million light-years away in the southerly constellation Corvus, two large galaxies are colliding. Stars in the two galaxies, cataloged as NGC 4038 and NGC 4039, very rarely collide in the course of the ponderous cataclysm that lasts for hundreds o...
2021年03月27日 Exploring the Antennae Image Credit & Copyright: Bernard Miller Explanation: Some 60 million light-years away in the southerly constellation Corvus, two large galaxies are colliding. Stars in the two galaxies, cataloged as NGC 4038 and NGC 4039, very rarely collide in the course of the ponderous cataclysm that lasts for hundreds of millions ...
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...
2020年12月03日 The Antennae Galaxies in Collision Image Credit: ESA/Hubble NASA Explanation: Sixty million light-years away toward the southerly constellation Corvus, these two large galaxies are colliding. The cosmic train wreck captured in stunning detail in this Hubble Space Telescope snapshot takes hundreds of millions of years to play out. Cataloged as NGC...
2019 October 9 NGC 7714: Starburst after Galaxy Collision Image Credit: NASA, ESA, Hubble Legacy Archive; Processing & Copyright: Rudy Pohl Explanation: Is this galaxy jumping through a giant ring of stars? Probably not. Although the precise dynamics behind the featured image is yet unclear, what is clear is that the pictured galaxy, NGC 7714, has been s...
2019 August 11 Arp 87: Merging Galaxies from Hubble Image Credit: NASA, ESA, Hubble Heritage Team (STScI, AURA) Explanation: This dance is to the death. Along the way, as these two large galaxies duel, a cosmic bridge of stars, gas, and dust currently stretches over 75,000 light-years and joins them. The bridge itself is strong evidence that these two immens...
2019 June 14 NGC 4676：双鼠星系 影像提供与版权: Bruce Waddington 说明: 这两个庞大的星系正在拉开彼此。它们之所以被称为双鼠星系是因为它们都具有长长的尾巴，每一个大型旋涡星系实际上都穿过了另一个星系。它们的长尾巴是被强烈的引力潮牵引出来，而不是星系中单个恒星的碰撞产生的。因为它们距离我们如此遥远，所以宇宙间的相互作用是以慢运动的方式发生，通常要经历数亿万年。在接下来的十亿年里，它们可能会发生一次又一次地碰撞，直到它们合并形成一个星系。NGC 4676位于后发座方向、距离我们大约3亿光年远，很可能是后发星系团的成员。这幅宽阔的视野在小型望远镜中并不常见，它捕捉到了数十万光年长的黯淡潮汐尾。 NGC 4676: The Mighty Mice Image Credit &am...