By Ragini Chaturvedi | Freehold, NJ

By Ragini Chaturvedi | Freehold, NJ

By Jack Pope | Griffith Wildlife Management Area, Scott County, Kentucky, USA

By Olivér Nagy | Budapest

By Karl Diefenderfer | Quakertown Pa

By Dr Ski | Valencia Observatory Garden

By Dr Ski | Valencia Observatory Garden

By William Mathe | Lindon Colorado

By Terri Noffke | South Beach, Hilton Head Island, SC

By Jim Livingston | Custer, SD

By Dr Ski | Valencia Observatory

By Dr Ski | Valencia Observatory

By Marcella Giulia Pace | Marina di Ragusa (Sicily)

By Peter Lowenstein | Mutare, Zimbabwe

By Todd Harig | Fargo, ND

By Todd Harig | Fargo, ND