Hubble Captures Galaxy Cluster

Look closely at this image from NASA’s Hubble Space Telescope and you’ll see galaxies of various shapes and sizes clustered together toward the center-left of the image. A few foreground stars shine brightly and are easily distinguished by the spikes that appear to extend outward from each star. These spikes, called diffraction spikes , are the result of how point sources of light (such as stars) bend, or diffract, around the supports for Hubble’s secondary mirror. …