If you've ever looked up at the night sky at the sound of a passing plane, you may have noticed a small blinking red light. That's called an anti-collision beacon, and while it might seem minor from ...

Moab, utah lies nestled in a bend in the Colorado River, a green dot in a Martian landscape of ochre plains and low rocky outcrops that resemble the protruding vertebrae of buried monsters. Sixteen ...

Richard Green is affiliated with the International Astronomical Union and the American Astronomical Society, as well as DarkSky International. Outdoor lighting for buildings, roads and advertising can ...