Astronomy Picture of the Day. Discover the cosmos!
Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2016 April 15 Mercury and Crescent Moon Set Image Credit & Copyright: Miguel Claro (TWAN, Dark Sky Alqueva) Astronomiekalender: Kalender bei CalSky: Kombinierter Kalender mit allen möglichen astronomischen Ereignissen. Einer der wichtigsten Menüpunkte. Mars Exploration Rover Mission: Home.