By John Merriam | Vilano Beach, FL, USA

By Douglas Durig | Cordell-Lorenz Observatory, Sewanee, TN, USA

By Prabhakaran A | Mleiha, UAE

By Adrian Steele | Hengistbury Head, Dorset, UK

By Patrick Harvey | Dayton, Nevada

By Kannan A | Woodlands, Singapore

By Hassan Dadashi.arani | Esfahan.iran

By Raul Cortes | Monterrey, Mexico.

By Raul Cortes | Monterrey, Mexico.

By Raul Cortes | Monterrey, Mexico.

By Raul Cortes | Monterrey, Mexico.

By kevan hubbard | Binsey, Oxfordshire, England

By Rob Ratkowski | Haleakala Summit,Maui

By Peter Lowenstein | Mutare, Zimbabwe

By Peter Lowenstein | Mutare, Zimbabwe

By Peter Lowenstein | Mutare, Zimbabwe