By Melissa Rehrig | Bethlehem, PA

By Paula Sedivec | Dayton, Oregon

By Dr Ski | Valencia Observatory Garden, Philippines

By Dr Ski | 9.3°N, 123.3°E

By Deirdre Horan | Dublin, Ireland.

By Dr Ski | 9.3°N, 123.3°E

By Dr Ski | Valencia Observatory Garden, Philippines

By Michael Ohannesian | Rigby Idaho

By Deirdre Horan | Dublin, Ireland.

By Gerardo Wright | Cancun, Quintana Roo, México

By Zarcos Palma | Mina S.Domingos - Portugal

By Idriss Dhoparee | London, England

By kevan hubbard | Seal sands, Co Durham, England.

By Retha Sawyer | Monticello, Arkansas, USA

By Randy Hoffmann | Tommy Thompson Park, Toronto.

By Justin Peel | Adairsville, Georgia, USA