By Richard Duffy | R.A.F. Holbeach, Gedney Drove End, England.

By Richard Duffy | Lincolnshire, England.

By Kathy Wollman | Palomar Mountain, California

By Lonny Cruff | 43°39'19.428" N 83°19'40.884" W

By Lonny Cruff | Headlands International Dark Sky Park, Mackinaw City, MI

By HARVEY EASTMAN | Albuquerque, NM

By Liz Schwab | Redmond, WA, USA

By John Ashley | Comet, Montana

By Victor C. Rogus | Sedona, Arizona

By Ken Chan | Stanford, CA, USA

By Patty Fine | Springfield, Illinois, USA

By Frederico Lopes de Almeida | Brasilia, Distrito Federal, Brazil

By kevan hubbard | Teesmouth nature reserve, Co Durham, England

By Dirk Van Ingelgem | Heverlee, Leuven,Belgium

By John Benfatti | Gardiner, New York, USA

By Kannan A | Woodlands, Singapore