By Jelieta Walinski Ph.D | Medicine Rock State Park, MT, USA

By Barry Medlin | Hahira, GA

By Rhonda Black | Reedsport, Oregon, USA

By Cecille Kennedy | Otter Rock, Oregon USA

By Denise Wolff | New Holland, PA, USA

By Filipp Romanov | Yanqi Lake Observatory, UCAS, Beijing, China

By Hassan Dadashi . Arani | Meshginshahr . Iran

By Dr Kumar Haraprasd Misra | Baripada,Odisha, India

By Y. Henry | Fort Worth, Texas, United States of America

By Mario Rana | Hampton, Virginia

By Kevan Hubbard | Teesmouth Nature Reserve ,Co Durham, England.

By Bob Kelly | Ardsley, NY, USA

By Rich Richins | Las Cruces, NM, USA

By Elmarie van Rooyen | Smoky Lake Alberta, Canada

By Steven Bellavia | New Suffolk, NY

By Mohamed Usama | Location: Egypt - Saint Catherine - Dar Eid