CTV Edmonton: On Friday Jasper National Park was named the world’s largest dark-sky preserve by Canada’s environment minister Peter Kent. The 11 228 km² refuge, four hours west of Edmonton, in the Canadian Rockies, is 10 times the size of the next-largest designated area—Grasslands National Park in Saskatchewan. Dark-sky preserves are designated wilderness areas where strict lighting ordinances allow people to easily observe the night sky. Wilderness astronomy is a growing eco-tourism trend, where iPads and GPS-based star finders replace telescopes.