By Peter Goodman | Yellowstone National Park

By John Fialkovich | Richland, WA

By Dennis Holmes | Saint Simons Island, GA, USA

By David Proebstel | Hurricane Ridge near Port Angeles, WA

By John Sobeski | Chicago Illinois

By Raul Cortes | Monterrey, Mexico.

By Raul Cortes | Monterrey, Mexico.

By Gordon Satohj | On College Road, Michigan State University Farms, Lansing, Michigan, United States of America

By John Nelson | Vantage, Washington USA

By John Fialkovich | Richland, WA

By JV Noriega | Manila, Philippines

By Mohamed Mohamed | Libya,Tripoli

By Kelly Morris | Near Townsend, Montana USA

By Kelly Morris | Near Townsend, Montana USA

By Carter Newton | Sun Valley, Idaho, USA

By Ross Stone | NRAO Telescope in Owens Valley near Big Pine, CA