2020年8月27日 Shell Galaxies in Pisces Image Credit & Copyright: Martin Pugh Explanation: This intergalactic skyscape features a peculiar system of galaxies cataloged as Arp 227 some 100 million light-years distant. Swimming within the boundaries of the constellation Pisces, Arp 227 consists of th […]
This image from the NASA/ESA Hubble Space Telescope features the spectacular galaxy NGC 2442, nicknamed the Meathook galaxy owing to its extremely asymmetrical and irregular shape. This galaxy was host to a supernova explosion spotted in March 2015, known as SN 2015F, that was created by a white dwa
The barred spiral galaxy known as NGC 4907 shows its starry face from 270 million light-years away to anyone who can see it from the Northern Hemisphere. This is a new image from the NASA/ESA Hubble Space Telescope of the face-on galaxy, displaying its beautiful spiral arms, wound loosely around its
The galaxy known as NGC 5907 stretches wide across this image. Appearing as an elongated line of stars and dark dust, the galaxy is categorized as a spiral galaxy just like our own Milky Way. In this new image from the NASA/ESA Hubble Space Telescope, we don’t see the beautiful spiral arms because w
银河系中心超大质量黑洞周围的区域受引力控制，但这并不是唯一的作用力。根据美国宇航局机载望远镜，平流层红外天文台或SOFIA的最新研究，磁场强度可能足以控制物质绕黑洞运动。 这项研究本周在美国天文学会的一次会议上公布，它可能有助于解答长期以来的谜团:为什么我们的黑洞相对于其他黑洞来说比较安静，为什么我们星系核心的新恒星的形成速度低于预期。 使用其最新的红外仪器研究与磁场线垂直排列的天体尘埃粒子，SOFIA能够绘制出银河系中心的详细地图，展示黑洞周围这些看不见的磁场的行为。 银河系中心区域的合成图像，即人马座A。SOFIA发现以流线显示的磁场强度足以控制黑洞周围的物质移动，即使存在巨大的引力。这可
Seen here in incredible detail, thanks to the NASA/ESA Hubble Space Telescope, is the starburst galaxy formally known as PLCK G045.1+61.1. The galaxy, which appears as multiple reddish dots near the center of the image, is being gravitationally lensed by a cluster of closer galaxies, also seen in th
Looking deep into the universe, the NASA/ESA Hubble Space Telescope catches a passing glimpse of the numerous arm-like structures that sweep around this barred spiral galaxy, known as NGC 2608. Appearing as a slightly stretched, smaller version of our Milky Way, the peppered blue and red spiral arms
美国宇航局/欧空局哈勃太空望远镜的最新结果表明，早期宇宙中第一批恒星和星系的形成比之前认为的要早。欧洲天文学家还没有发现第一代恒星的证据，也就是所谓的星族Ⅲ，那时宇宙只有5亿年的历史。 探索最早的星系仍然是现代天文学的重大挑战。我们不知道宇宙中最初的恒星和星系是何时或如何形成的。这些问题可以通过哈勃太空望远镜的深度成像观测来解决。哈勃望远镜可以让天文学家将宇宙回溯到大爆炸5亿年内。 美国宇航局/欧空局哈勃太空望远镜的最新结果表明，早期宇宙中第一批恒星和星系的形成比之前认为的要早。欧洲天文学家小组没有发现第一代恒星的证据，也就是第三代恒星，那时宇宙还不到10亿年。这个艺术家的印象呈现了早期的宇宙
Several hundred million years ago, two galaxy clusters collided and then passed through each other. This mighty event released a flood of hot gas from each galaxy cluster that formed an unusual bridge between the two objects. This bridge is now being pummeled by particles driven away from a supermas
宇宙的膨胀可能在各个方向上都不尽相同 宇宙学的基本思想之一是，如果你看足够远的地方，所有东西在各个方向上看起来都是一样的。一项使用NASA钱德拉X射线天文台和ESA的XMM-Newton数据的新研究正在挑战这一基本概念。 天文学家利用来自这些轨道天文台的X射线数据，研究了数百个星系团，它们是宇宙中由重力聚集在一起的最大结构，以及它们在天空中的表观性质如何不同。 这张图表包含了一张完整的天空地图，显示了数百个星系团中的四个，这些星系团被用来测试宇宙在大尺度上是否在各个方向上都是相同的。 来源：NASA/CXC/Univ. of Bonn/K. Migkas et al.; Illustratio
