保护地球，探索宇宙，发现文明
This Hubble Space Telescope image features two merging galaxies in the VV-689 system, nicknamed the Angel Wing. Unlike chance alignments of galaxies, which only appear to overlap when viewed from our vantage point on Earth, the two galaxies in VV-689 are in the midst of a collision. The galactic interaction has left the VV-689 system almost completely symmet...
NASA钱德拉X射线天文台对100多个星系进行的一项新调查发现，有迹象表明，黑洞正在吞噬数千颗恒星，以增加其质量。图中所示的4个星系是样本中29个星系中的4个，这些星系显示了黑洞在其中心附近不断生长的证据。来自钱德拉（蓝色）的X射线被叠加在NASA哈勃太空望远镜拍摄的NGC 1385、NGC 1566、NGC 3344和NGC 6503的光学图像上。翻转图中出现的方框勾勒出正在萌芽的黑洞的位置。 这些新的结果表明，至少其中一些黑洞要达到现在的大小，经历了某种程度上暴力的方式——恒星毁灭的规模是前所未见。 天文学家对两类不同的黑洞进行了详细的研究。较小的种类是“恒星质量”黑洞，其质量通常为太阳质量的5到30倍。在光谱的另一端是生活在大多数大星系中间的超大质量黑洞，其质量达几百万甚至几十亿个太阳质量。近年来，也有证...
We’re celebrating the Hubble Space Telescope’s 32nd birthday with a stunning look at an unusual close-knit collection of five galaxies, called The Hickson Compact Group 40. This eclectic galaxy grouping includes three spiral-shaped galaxies, an elliptical galaxy, and a lenticular (lens-like) galaxy. Somehow, these different galaxies crossed paths...
A spectacular head-on collision between two galaxies fueled the unusual triangular-shaped star-birthing frenzy, as captured in this image from the Hubble Space Telescope. The interacting galaxy duo is collectively called Arp 143. The pair contains the glittery, distorted, star-forming spiral galaxy NGC 2445 at right, along with its less flashy companion, NGC...
This striking image from the NASA/ESA Hubble Space Telescope showcases Arp 298, a stunning pair of interacting galaxies. Arp 298 – which comprises the two galaxies NGC 7469 and IC 5283 – lies roughly 200 million light-years from Earth in the constellation Pegasus. The larger of the two galaxies pictured here is the barred spiral galaxy NGC 7469, and IC 5283 ...
This image from the NASA/ESA Hubble Space Telescope feels incredibly three-dimensional for a piece of deep-space imagery. The image shows Arp 282, an interacting galaxy pair composed of the Seyfert galaxy NGC 169 (bottom) and the galaxy IC 1559 (top). Interestingly, both galaxies have monumentally energetic cores known as active galactic nuclei (AGN), althou...
影像来源：X-ray: NASA/CXC/SAO; Optical: NASA/STScI, Palomar Observatory, DSS; Radio: NSF/NRAO/VLA; H-Alpha: LCO/IMACS/MMTF NASA及其国际合作伙伴最近发射的詹姆斯·韦伯太空望远镜（韦伯）和X射线成像偏振探测仪（IXPE）极好地提醒人们，宇宙以多种不同的形式发射光或能量。为了全面研究宇宙物体和现象，科学家需要能够探测整个电磁波谱的望远镜。 这个画廊提供了一些例子，展示了来自地面和太空中的望远镜的不同类型的光的组合方式。这些选择的共同点是来自NASA钱德拉X射线天文台的数据，说明X射线（由非常热和高能的过程发出）是如何在整个宇宙中被发现的。 宝瓶座R 这个天体实际上是一对恒星：一颗在相对低温下稳定燃烧的...
The spiral arms of the galaxy NGC 3318 are lazily draped across this image from the NASA/ESA Hubble Space Telescope. This spiral galaxy lies in the constellation Vela and is roughly 115 million light-years away from Earth. Vela was originally part of a far larger constellation, known as Argo Navis after the fabled ship Argo from Greek mythology, but this unw...
在一个相对较小的星系中发现一个超大质量黑洞，有助于天文学家解开最大黑洞如何成长的谜团。 研究人员利用NASA的钱德拉X射线天文台在Mrk 462星系的气体和尘埃中发现了一个黑洞，其质量约为太阳的20万倍。 Mrk 462仅包含数亿颗恒星，是一个矮星系。相比之下，我们的银河系拥有数千亿颗恒星。这是第一次在矮星系中发现被严重掩埋或“遮蔽”的超大质量黑洞。 “Mrk 462 中的这个黑洞是超大质量或怪物黑洞中最小的一个，”新罕布什尔州达特茅斯学院的杰克·帕克说，他与同样来自达特茅斯的同事瑞恩·希科克斯领导了这项研究。 “众所周知，像这样的黑洞很难找到。” 在较大的星系中，天文学家经常通过寻找星系中心恒星的快速运动来发现黑洞。然而，矮星系太小、太暗，目前大多数仪器都无法探测到。另一项技术是寻找成长中黑洞的特征，例如气体...
In this image, the NASA/ESA Hubble Space Telescope captures a side-on view of NGC 3568, a barred spiral galaxy roughly 57 million light-years from the Milky Way in the constellation Centaurus. In 2014 the light from a supernova explosion in NGC 3568 reached Earth – a sudden flare of light caused by the titanic explosion accompanying the death of a massive st...