哈勃望远镜拍摄到宇宙星系团

哈勃望远镜拍摄到宇宙星系团

ByNASA中文

The massive cluster Abell 3322 is featured in this image from the NASA/ESA Hubble Space Telescope, in which the galaxy 2MASX J05101744-4519179 basks in the center. This distant galaxy cluster is a cosmic leviathan that is highly luminous at X-ray wavelengths. Observing galaxy clusters like Abell 3322 can advance our understanding of the evolution and interactions of dark and luminous matter in galaxy clusters, and also reveals powerful gravitational ‘telescopes’ that magnify distant objects through gravitational lensing. Knowing the location of these lenses can enable future observations with both Hubble and the NASA/ESA/CSA James Webb Space Telescope. The galaxy cluster is located in the constellation Pictor, around 2.6 billion light-years from Earth. Two of Hubble’s instruments joined forces to create this image: Wide Field Camera…

哈勃望远镜瞥见一个闪烁的星系团

哈勃望远镜瞥见一个闪烁的星系团

ByNASA中文

The glittering, glitzy contents of the globular cluster NGC 6652 sparkle in this star-studded image from the NASA/ESA Hubble Space Telescope. The core of the cluster is suffused with the pale blue light of countless stars, and a handful of particularly bright foreground stars are adorned with crisscrossing diffraction spikes. NGC 6652 lies in our own Milky Way galaxy in the constellation Sagittarius, just under 30,000 light-years from Earth and only 6,500 light-years from the galactic center. Globular clusters are stable, tightly gravitationally bound clusters containing anywhere from tens of thousands to millions of stars. The intense gravitational attraction between closely packed stars in globular clusters is what gives these star-studded objects their regular, spherical shape. This image combines data from two of Hubble’s most…

哈勃望远镜窥视宁静星系

哈勃望远镜窥视宁静星系

ByNASA中文

The tranquil spiral galaxy UGC 12295 basks leisurely in this image from the NASA/ESA Hubble Space Telescope. This galaxy lies around 192 million light-years away in the constellation Pisces and is almost face-on when viewed from Earth, displaying a bright central bar and tightly wound spiral arms. Despite its tranquil appearance, UGC 12295 played host to a catastrophically violent explosion – a supernova – detected in 2015. Supernovae are the explosive deaths of massive stars and are responsible for forging many of the elements found here on Earth. Two different teams of astronomers used Hubble’s Wide Field Camera 3 to observe UGC 12295 and sift through the wreckage of this vast stellar explosion. The first team examined the supernova’s detritus to better understand the evolution…

哈勃观测到星系邻居

哈勃观测到星系邻居

ByNASA中文

The highly irregular galaxy ESO 174-1, which resembles a lonely, hazy cloud against a backdrop of bright stars, dominates this image from the NASA/ESA Hubble Space Telescope. ESO 174-1 lies around 11 million light-years from Earth and consists of a bright cloud of stars and a faint, meandering tendril of dark gas and dust. This image is part of a collection of Hubble observations designed to better understand our nearby galactic neighbors. The observations aim to resolve the brightest stars and basic properties of every known galaxy within 10 megaparsecs. A parsec is a unit used by astronomers to measure the vast distances to other galaxies – 10 megaparsecs translates to 32 million light-years – and makes astronomical distances easier to handle. For example, the…

哈勃望远镜瞥见一个闪烁的星团

哈勃望远镜瞥见一个闪烁的星团

ByNASA中文

The teeming stars of the globular cluster NGC 6544 glisten in this image from the NASA/ESA Hubble Space Telescope. This cluster of tightly bound stars lies more than 8,000 light-years away from Earth and is, like all globular clusters, a densely populated region of tens of thousands of stars. This image of NGC 6544 combines data from two of Hubble’s instruments, the Advanced Camera for Surveys and Wide Field Camera 3, as well as two separate astronomical observations. The first observation was designed to find a visible counterpart to the radio pulsar discovered in NGC 6544. A pulsar is the rapidly spinning remnant of a dead star, emitting twin beams of electromagnetic radiation like a vast astronomical lighthouse. This pulsar rotates particularly quickly, and astronomers…

哈勃观察到一种宇宙海洋生物

哈勃观察到一种宇宙海洋生物

ByNASA中文

The jellyfish galaxy JO206 trails across this image from the NASA/ESA Hubble Space Telescope, showcasing a colorful star-forming disk surrounded by a pale, luminous cloud of dust. A handful of foreground bright stars with crisscross diffraction spikes stands out against an inky black backdrop at the bottom of the image. JO206 lies over 700 million light-years from Earth in the constellation Aquarius. Jellyfish galaxies are so-called because of their resemblance to their aquatic namesakes. In the bottom right of this image, long tendrils of bright star formation trail the disk of JO206, just as jellyfish trail tentacles behind them. The tendrils of jellyfish galaxies are formed by the interaction between galaxies and the intra-cluster medium, a tenuous superheated plasma that pervades galaxy clusters. As galaxies…

哈勃太空望远镜观测到一个闪烁的星团

哈勃太空望远镜观测到一个闪烁的星团

ByNASA中文

The densely packed globular cluster NGC 6325 glistens in this image from the NASA/ESA Hubble Space Telescope. This concentrated group of stars lies around 26,000 light-years from Earth in the constellation Ophiuchus. Globular clusters like NGC 6325 are tightly bound collections of stars with anywhere from tens of thousands to millions of members. They can be found in all types of galaxies and act as natural laboratories for astronomers studying star formation. This is because the constituent stars of globular clusters tend to form at roughly the same time and with similar initial composition, meaning astronomers can use them to fine-tune their theories of how stars evolve. Astronomers inspected this particular cluster not to understand star formation, but to search for a hidden monster. Though…

哈勃太空望远镜拍摄到异常明亮的相互作用星系

哈勃太空望远镜拍摄到异常明亮的相互作用星系

ByNASA中文

This new image from NASA’s Hubble Space Telescope shows interacting galaxies known as AM 1214-255. These galaxies contain active galactic nuclei, or AGNs. An AGN is an extraordinarily luminous central region of a galaxy. Its extreme brightness is caused by matter whirling into a supermassive black hole at the galaxy’s heart. Hubble observed the galaxy closest to the center as part of an AGN survey, with the aim of compiling a dataset about nearby AGNs to be used as a resource for astronomers investigating AGN physics, black holes, host galaxy structure, and more. Image Credit: NASA, ESA, A. Barth (University of California – Irvine), and J. Dalcanton (University of Washington); Processing: Gladys Kober (NASA/Catholic University of America) 这张来自NASA哈勃太空望远镜的新图像显示了相互作用的星系，称为AM 1214-255。这些星系包含活动星系核（AGN）。AGN是星系中非常明亮的中心区域。它的极端亮度是由物质旋转进入星系中心的超大质量黑洞造成。 作为AGN调查的一部分，哈勃观察了最靠近中心的星系，目的是汇编一个关于附近AGN的数据集，作为天文学家研究AGN物理学、黑洞、宿主星系结构等的资源。 影像来源：NASA, ESA, A. Barth (University…