在室女座星团的中心
(原标题: In the Heart of the Virgo Cluster)
2022-06-15
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室女座星系团是离我们银河系最近的星系团。室女座星系团是如此的近，以至于它在天空中的跨度超过了5度——大约是满月角度的10倍。室女座星系团的中心距离我们约7000万光年，它是最近的星系团，包含超过2000个星系，对我们银河系周围的本星系群的星系有明显的引力。该星团不仅包含充满恒星的星系，还包含热得发出x射线的气体。星系团内部和周围星系的运动表明，它们包含的暗物质比我们能看到的任何可见物质都要多。在这张图片中，室女座星系团的中心包括明亮的梅西耶星系，如左上角的马卡良之眼，中间右上方的M86，最右边的M84，以及右下角的螺旋星系NGC 4388。《天体惊喜》：APOD在你生日那天给你拍了什么照片？(1995后)
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The Virgo Cluster of Galaxies is the closest cluster of galaxies to our Milky Way Galaxy. The Virgo Cluster is so close that it spans more than 5 degrees on the sky - about 10 times the angle made by a full Moon. With its heart lying about 70 million light years distant, the Virgo Cluster is the nearest cluster of galaxies, contains over 2,000 galaxies, and has a noticeable gravitational pull on the galaxies of the Local Group of Galaxies surrounding our Milky Way Galaxy. The cluster contains not only galaxies filled with stars but also gas so hot it glows in X-rays. Motions of galaxies in and around clusters indicate that they contain more dark matter than any visible matter we can see. Pictured here, the heart of the Virgo Cluster includes bright Messier galaxies such as Markarian's Eyes on the upper left, M86 just to the upper right of center, M84 on the far right, as well as spiral galaxy NGC 4388 at the bottom right. Celestial Surprise: What picture did APOD feature on your birthday? (post 1995)
© Saulius Adomaitis