By Mohammed Abdallah | Suez, Egypt

By Joel Coombs | Holt Canyon Utah

By Makrem Larnaout | Mos Espa Nafta

By Alaa El Bedewi | White Desert, Egypt

By Rustine Neuberger | Clinton MS

By Mandy Daniels | Derbyshire, UK

By Paul C. Peh | Lahaina, Hawaii, USA

By Miguel Sala | Javalambre Astrophysical Observatory (Teruel, Spain)

By FOTIS MAVROUDAKIS | Drama, Greece

By Cecille Kennedy | Boiler Bay State Park, Oregon

By Hassan Dadashi . arani | Esfahan . Iran

By Steve Price | Kemmerer, Wyoming, Fossil Quarry

By Raul Cortes | Monterrey, Mexico.

By Patricio Leon | Santiago, Chile

By ABDUL A THOMAS | Malton

By Mohammad Adeel | Makhad, Kalabagh, Punjab, Pakistan