By Dr Ski | Valencia Observatory

By Dr Ski | Valencia Observatory

By Dr Ski | Valencia Observatory Garden

By Colin Chatfield | East of Saskatoon, Saskatchewan

By Alexander Stinchcomb | Palmbay Florida

By Tim Yacyshyn | Richmond, British Columbia, Canada (49N; 123W)

By Tim Yacyshyn | Richmond, British Columbia, Canada (49N; 123W)

By Peter Andersson | Osby, Sweden

By Peter Andersson | Osby, Sweden

By Dr Ski | Valencia Observatory

By Dr Ski | Valencia Observatory

By Sudhir Sharma | Fishkill, NY, USA

By George Mitsoglou | El Tunco, El Salvador

By Peter Lowenstein | Mutare, Zimbabwe

By Emma Monica Andrici | Kolding, Denmark

By Dr Ski | Valencia Observatory