By Margaret Rhodes | Knoxville, Tennessee, USA

By Mohamed Mohamed | Libya,Tripoli

By Mohamed Mohamed | Libya,Tripoli

By kevan hubbard | Runswick bay, North Yorkshire Moors national park, England

By kevan hubbard | Runswick bay, North Yorkshire Moors national park, England

By Salil Kawli | Mumbai India

By Geraint Smith | San Cristobal, NM USA

By Marlane Burns | South of Robert Lee, Texas

By Chessa Tan | Tiong Bahru, Singapore

By Frank Lu | La Marque, Texas, USA

By Hassan Dadashi.arani | Esfahan.iran

By Dr Ski | 9.3°N, 123.3°E

By Dr Ski | 9.3°N, 123.3°E

By Dr Ski | Valencia Observatory, central Philippines

By Heather Hinson | New Smyrna Beach, FL, USA

By Mohamed Mohamed | Libya,Tripoli