By Judy Boyle | Yellowstone National Park, Wyoming USA

By Osama Fathi | Mount Sinai, St Catherine, Egypt

By Mohammed Abdallah | Suez, Egypt

By Jim Militello | Tucson, Arizona USA

By Teresa Molinaro | Falerna, Calabria, South Italy

By Monika Hoffmann | Namibia

By Victoria Bryhan | Corvallis, Oregon

By David Fradkin | Effort, Pennsylvania, USA

By Graziano Ventre | Postazione Astronomica Bellagio Via Lattea L06

By Muhammad Alaa | Egypt, Assiut

By Sudhir Sharma | Stormville, NY

By Jeremy Likness | Newport, Oregon, USA

By Hassan Dadashi Arani | Esfahan. Iran

By Denise Anderson | West Liberty, Iowa

By Patricio Leon | Santiago, Chile

By Lynzie Flynn | Buenos Aires, Puntarenas, Costa Rica