By Dr Ski | Valencia Observatory

By Dr Ski | Valencia Observatory

By Dr Ski | Valencia Observatory

By Randy Hoffmann | Toronto, Canada

By Daniel Wend | Des Moines, Washington, USA

By Marissa Culp | Honolulu, HI, USA

By Marissa Culp | Honolulu, HI, USA

By Varun Sharma | India

By Kannan A | singapore

By Kannan A | singapore

By Walter Karling | Rooftop parking of the Stop and Shop supermarket in Woodside in the NYC Borough of Queens. (48th Street at the intersection of Broadway.)

By Doug Durig | Cordell-Lorenz Observatory, Sewanee TN

By Helio Vital | Rio de Janeiro, Brazil

By Steven Sweet | Mississauga, Ontario Canada

By Page OReilly | West Melton, Christchurch, New Zealand

By Kannan A | Singapore