哈勃看到一个闪亮的临近星系

哈勃看到一个闪亮的临近星系

ByNASA中文

The galaxy ESO 300-16 looms over this image from the NASA/ESA Hubble Space Telescope. This galaxy, which lies 28.7 million light-years from Earth in the constellation Eridanus, is a ghostly assemblage of stars which resembles a sparkling cloud. Other distant galaxies and foreground stars complete this astronomical portrait, which was captured by the Advanced Camera for Surveys. This observation is one of a series which aims to get to know our galactic neighbors. Hubble has observed around three quarters of known galaxies within about 10 megaparsecs of Earth in enough detail to resolve their brightest stars and establish distances to these galaxies. A team of astronomers proposed using small gaps in Hubble’s observing schedule to acquaint ourselves with the remaining quarter of these nearby galaxies….

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…

詹姆斯·韦伯太空望远镜聚焦El Gordo星系团中的引力弧

詹姆斯·韦伯太空望远镜聚焦El Gordo星系团中的引力弧

ByNASA中文

一张名为“El Gordo”的星系团的新图像揭示了以前从未见过的遥远的尘埃物体，并提供了大量新的科学证据。这幅红外图像由NASA的詹姆斯·韦伯太空望远镜拍摄，显示了各种不寻常的、扭曲的背景星系，这些星系只在之前的哈勃太空望远镜图像中有所暗示。

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…