Astronomy Picture of the Day . Summer Night in Astronomy Town . ... Credit Copyright: Babak Tafreshi ( TWAN ) Explanation: This serene view records a late summer night sky over the rolling, green hills of planet Earth. ... Fittingly, this Astronomy Town sky view finds a lovely part of the Milky Way near picture center. The three brightest stars are the stars of the Summer Triangle , Deneb in Cygnus (top), Altair in Aquila (left), and Vega in Lyra (right). ... Constellations and Cloudy Skies . ...