韦伯影像: 不寻常的螺旋星系M66

韦伯影像: 不寻常的螺旋星系M66

ByNASA中文

2023年8月29日 Unusual Spiral Galaxy M66 from Webb Image Credit: NASA, ESA, CSA, JWST; Processing: Brian Tomlinson Explanation: Why isn’t spiral galaxy M66 symmetric? Usually, density waves of gas, dust, and newly formed stars circle a spiral galaxy‘s center and create a nearly symmetric galaxy. The differences between M66’s spiral arms and the apparent displacement of its nucleus are all likely caused by previous close interactions and the tidal gravitational pulls of nearby galaxy neighbors M65 and NGC 3628. The galaxy, featured here in infrared light taken by the James Webb Space Telescope, spans about 100,000 light years, lies about 35 million light years distant, and is the largest galaxy in a group known as the Leo Triplet. Like many spiral galaxies, the long and intricate…

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。