2019 June 12

图片来源:NASA, ESA, Hubble
图片处理和版权:Leo Shatz

说明:在这幅呈现美丽岛宇宙中央的彩色细致影像中,尘埃带似乎绕着M96的核心旋转。当然,M96是一个旋涡星系,算上延伸到较明亮中央区域之外的模糊旋臂,它的跨度约为10万光年,相当于我们银河系小。M96也被称为NGC 3368,距离我们约3500万光年远,是狮子座I星系群的主要成员。这幅特征影像是由哈勃太空望远镜拍摄的。M96的不对称性原因尚不清楚,它可能是由与其他狮子座I星系群的引力相互作用引起的,但缺少星系之间的漫射辉光,这似乎表明近来没有发生相互作用。仔细观察这幅影像的边缘,你就能发现背景中的遥远星系。

Spiral Galaxy M96 from Hubble
Image Credit:
NASA, ESA, Hubble; Processing & Copyright: Leo Shatz

Explanation: Dust lanes seem to swirl around the core of Messier 96 in this colorful, detailed portrait of the center of a beautiful island universe. Of course M96 is a spiral galaxy, and counting the faint arms extending beyond the brighter central region, it spans 100 thousand light-years or so, making it about the size of our own Milky Way. M96, also known as NGC 3368, is known to be about 35 million light-years distant and a dominant member of the Leo I galaxy group. The featured image was taken by the Hubble Space Telescope. The reason for M96’s asymmetry is unclear — it could have arisen from gravitational interactions with other Leo I group galaxies, but the lack of an intra-group diffuse glow seems to indicate few recent interactions. Galaxies far in the background can be found by examining the edges of the picture.

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