APOD 3.7: Lenticular Cloud, Moon, Mars, and Venus

           The original plan of this picture was to photograph a rare conjunction of Mars and Venus that occurred two and a half weeks ago, with the added bonus of a crescent moon and the International Space Station flying nearby. During day two of photographing, a lenticular cloud appeared, blocking the view from Madeira Island, Portugal. Mars and Venus will appear this close in the sky late August, but whether this photogenic cloud shows up again will be unknown.