Spitzer detected infrared emission not only from the ring, but from the center of the galaxy too, where there is a huge black hole, believed to be a billion times more massive than our Sun.

• 斯必泽不仅探测到了来自星系环的红外辐射，还有来自星系中心的辐射，这里有一个巨大的黑洞，其质量据信是太阳的10亿倍以上。