CL0024+17 [SEP] constellation
CL0024+17
The cluster CL0024+17 is a cluster of galaxies located in Pisces, and about 4 billion light years distant. 
Cl 0024+17 is allowing astronomers to probe the distribution of dark matter in space. The blue streaks near the center of the image are the smeared images of very distant galaxies that are not part of the cluster. The distant galaxies appear distorted because their light is being bent and magnified by the powerful gravity of Cl 0024+17, an effect called gravitational lensing.
Dark
: Hubble pictures of CL0024+17 group
- Press release and more images and video presentations of CL0024+17 at Spacetelescope.org