By Randy Strauss | A bortle 4 state park in eastern Nebraska

By JOSE PALMA | Setubal , Portugal

By Bette Lutes-Konecny | Cancún, Mexico

By David Hawkes | Sheffield, UK

By Hassan Dadashi . Arani | Chaharmahal and Bakhtiari province. Iran

By Matthew Chin | Hong Kong

By Nanci McCraine | Dryden NYS USA

By Nanci McCraine | Dryden, NYS, USA

By Roosevelt Silva | Brasília, DF, Brasil

By ANDY BENTLEY | Mountain View, CA, USA

By Lorraine Boyd | Delmar, New York

By Hassan Dadashi . Arani | Chaharmahal and Bakhtiari province. Iran

By Ross Stone | Lee Vining, CA, USA

By Nina Gorenstein | West Lafayette, IN, USA

By Patricio Leon | Santiago, Chile

By Alexander Krivenyshev | Manhattan, New York