Say "coagulated milk protein" with today's Groupon to Joe David Cantu Photography. For $49, you get a one-hour photo shoot at J. D. Cantu's studio in Chester and six sheets of prints, a $250 value. Though your Groupon is not valid for wedding photos, it's the perfect way to document your engagement in your hometown newspaper for former head cheerleaders and football players to see and envy.In 1978, amateur bat photographer Gregory Hansen was in his front yard one night when a mysterious white orb appeared in the sky over his home. Diverting his attention from a particularly active nest of eptesicus fuscus, he began photographing the orb, which made no attempt to flee or conceal itself. Hansen continued to document the orb as it reappeared over his house, each night shrinking slightly “as though passing slowly into the spirit world,” Hansen observed. On particularly cloudy nights, the orb would not be present, prompting Hansen to speculate that ghosts may be allergic to thunder.