By Frances Carrillo | San Antonio, Texas

By John Van Allen | Santo Domingo, Dominican Republic

By Dr Ski | Valencia Observatory

By Dr Ski | Valencia Observatory Garden

By Dr Ski | Valencia Observatory

By Neeraj Ladia | Masirah Island, Oman

By Mohamed Mohamed | Tripoli,Libya

By Mohamed Mohamed | Tripoli,Libya

By Tracy Quigley | Youngstown, Ohio

By Stephanie Longo | Pike National Forest, Colorado USA

By Stephanie Longo | Pike National Forest, Colorado USA

By Peter Lowenstein | Mutare, Zimbabwe

By Hassan Dadashi.arani | Esfahan.iran

By Julie Francois | Albuquerque, NM USA

By Gordon Davison | Montgomery Village, MD. USA

By Dr Ski | Valencia Observatory