Astronomy Picture of the Day . ... 18.05.2009 . ... Patchy clouds in front of the rising moon created crepuscular rays streaming across the night sky in spectacular fashion. In the foreground is a stone tower from Thurso Castle , a 12th century fortress augmented in the 17th century. Above the crepuscular moon rays are stars, many from the constellation of the Lion ( Leo ). ... Publications with keywords: crepuscular rays - Moon . Publications with words: crepuscular rays - Moon . ...