My travels with my girlfriend across the southwest took us to Las Vegas, Nevada, easily one of the largest polluters of the night sky in the continent. Our first night in the area, we were camped at the campground near Red Rock Canyon National Conservation Area, to the west of Las Vegas. A friend we met up with remarked that it was like watching a sunrise all night long, stuck in that moment in time. He was perfectly accurate. As we were getting ready for bed that night, the glow had us anticipating a gradual increase in lightness from the east. – Read more