Night at the Edge

The autumn Milky Way and rising winter stars over the Grand Canyon. Red airglow brightens the horizon. Click the second photo to see a west-looking image at this night with the Summer Triangle above the canyon. The Grand Canyon, a World Heritage Site in the American southwest at the border of Arizona and Utah, is the longest canyon on the Earth (446 km), a steep-sided gorge carved by the Colorado River steadily in millions of years.