Galaxy Evolution Explorer Searches for LightNASA's Galaxy Evolution Explorer was launched on April 28, 2003. Its mission was to study the shape, brightness, size and distance of galaxies across 10 billion years of cosmic history.Image Credit: NASA/JPL-CaltechRead More Facebook Pinterest X LinkedIn Email https://www.nasa.gov/image-detail/pia04234orig/Copy URL to clipboard> DownloadShareTakenDecember 21, 2002Image CreditNASA/JPL-CaltechSize2907x3614px