保护地球, 探索宇宙, 发现文明
2023年4月1日 NGC 2442: Galaxy in Volans Image Credit & Copyright: Nicolas Rolland, Martin Pugh Explanation: Distorted galaxy NGC 2442 can be found in the southern constellation of the flying fish, (Piscis) Volans. Located about 50 million light-years away, the galaxy’s two spiral arms extending from a pronounced central bar give it a hook-shaped appe...
2022年12月22日 NGC 1365: Majestic Island Universe Image Credit & Copyright: Martin Pugh Explanation: Barred spiral galaxy NGC 1365 is truly a majestic island universe some 200,000 light-years across. Located a mere 60 million light-years away toward the faint but heated constellation Fornax, NGC 1365 is a dominant member of the well-studied Fornax Cluster ...
2022年10月16日 Barred Spiral Galaxy NGC 1300 Image Credit: NASA ESA, Hubble Heritage Explanation: Across the center of this spiral galaxy is a bar. And at the center of this bar is smaller spiral. And at the center of that spiral is a supermassive black hole. This all happens in the big, beautiful, barred spiral galaxy cataloged as NGC 1300, a galaxy that lies ...
2021年01月08日 NGC 1365: Majestic Island Universe Image Credit & Copyright: Mike Selby, Leonardo Orazi Explanation: Barred spiral galaxy NGC 1365 is truly a majestic island universe some 200,000 light-years across. Located a mere 60 million light-years away toward the chemical constellation Fornax, NGC 1365 is a dominant member of the well-studied Fornax C...
2020 June 11 Barred Spiral Galaxy NGC 1300 Image Credit: Hubble Heritage Team, ESA, NASA Explanation: Big, beautiful, barred spiral galaxy NGC 1300 lies some 70 million light-years away on the banks of the constellation Eridanus. This Hubble Space Telescope composite view of the gorgeous island universe is one of the largest Hubble images ever made of a comp...
2020 April 6 NGC 1672: Barred Spiral Galaxy from Hubble Image Credit: Hubble Legacy Archive, NASA, ESA; Processing & Copyright: Daniel Nobre Explanation: Many spiral galaxies have bars across their centers. Even our own Milky Way Galaxy is thought to have a modest central bar. Prominently barred spiral galaxy NGC 1672, featured here, was captured in spe...
这张引人注目的照片是由NASA/ESA哈勃太空望远镜的广域相机3 (WFC3)拍摄的，这是2009年安装在哈勃太空望远镜上的一个功能强大的仪器。WFC3为哈勃太空望远镜拍摄了许多许多最令人惊叹和极具标志性的照片。 如图所示，NGC 7773是一个棒旋星系的美丽例子。一个发光的棒状结构显著地穿过星系明亮的核心，延伸到NGC 7773的横扫而过的类似风车的螺旋臂的内部边界。天文学家认为，这些棒状结构出现在星系生命周期的后期，因为恒星形成物质向星系中心移动——较年轻的螺旋不像较老的螺旋那样经常具有棒状结构，这表明棒状结构是星系成熟的标志。它们也被认为是恒星的摇篮，因为它们闪耀着明亮的光芒，意味着有大量年轻的恒星。 我们的星系，银河系，被认为是像NGC 7773一样的棒旋星系。通过研究像NGC 7773这样遍及整个宇宙...