M104

The top panel shows a flat ring with a bright center in blue, even though it was taken in near infrared light. The bottom panel shows the same galaxy in visible light and shows a brighter and more expansive center against which the flat ring appears dark. Please see the explanation for more detailed information.
上图显示了一个扁平的环状结构，中心明亮，呈蓝色，尽管它是在近红外光下拍摄的下图显示可见光下的同一星系，中心更明亮、更广阔，而扁平的环状结构则显得很暗。有关更多详细信息，请参阅说明。