梅西耶96
(原标题: Messier 96)
2022-04-14
浏览次数: 17
在这张彩色的、详细的美丽的宇宙岛的肖像中，螺旋臂似乎围绕着梅西耶96的核心旋转。当然，M96是一个螺旋星系，算上从明亮的中心区域延伸出来的暗臂，它的跨度约为10万光年。这大约是我们银河系的大小。已知M96距离我们3800万光年，是狮子座I星系群的主要成员。背景星系和较小的狮子座I群成员可以通过检查这张照片找到。最吸引人的是它本身是一个螺旋星系，在离中心1点钟方向的外旋臂后面。它明亮的中央凸起被自己的黑暗尘埃云切割，背景螺旋的边缘看起来大约是M96的1/5大小。如果这个背景星系的实际大小与M96相似，那么它的距离大约是M96的5倍。
查看原文解释
Spiral arms seem to swirl around the core of Messier 96 in this colorful, detailed portrait 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. That's about the size of our own Milky Way. M96 is known to be 38 million light-years distant, a dominant member of the Leo I galaxy group. Background galaxies and smaller Leo I group members can be found by examining the picture. The most intriguing one is itself a spiral galaxy seen nearly edge on behind the outer spiral arm near the 1 o'clock position from center. Its bright central bulge cut by its own dark dust clouds, the edge-on background spiral appears to be about 1/5 the size of M96. If that background galaxy is similar in actual size to M96, then it would be about 5 times farther away.
© Mark Hanson