The Hubble site has just released an incredible zoomable image of the Coma Cluster. (Wow! You can also download images to make a mural!)
The entire cluster encompasses a spherical shape more than 20 million light-years in diameter, more than 300 million light-years from Earth in the northern constellation Coma Berenices. Hubble’s mega-view takes in a scene several million light-years across, about a third of the way out from the cluster’s center.
