By Kent and Carolyn Carlson | Moraine Park, Rocky Mountain National Park

By Muzamir Mazlan | Telok Kemang Observatory, Port Dickson, Negeri Sembilan, Malaysia

By Dr Ski | Valencia, Philippines

By Dr Ski | Valencia, Philippines

By Radu Anghel | Bacau, Romania

By Victor C. Rogus (FRAS) | Sedona, Arizona

By Marlane Burns | 8 miles west of Robert Lee, Texas

By Dr Ski | Valencia, Philippines

By Dr Ski | Valencia, Philippines

By John Michnowicz | Lake Alpine, Alpine County, CA

By Dr Ski | Valencia, Philippines

By Muzamir Mazlan | Telok Kemang Observatory, Port Dickson, Malaysia

By Dr Ski | Valencia, Philippines

By Dr Ski | Valencia, Philippines

By Steven Fell | 3 Shircliff Way, Jacksonville, FL 32204

By Adolfo López | Guatemala