Because of light and air pollution, the places where you can go and take a really good look at the night sky are shrinking with every passing year.
As of 2001, a fifth of the world's population is unable to see the Milky Way galaxy without a telescope.
North America and Europe are the most affected regions. It's not surprising, given that 99% of the United States is considered "polluted." Thankfully, there are still places where you can go to see the full breadth of the night sky. Here are a few of the best viewing places.
New Mexico's Chaco Culture National Historical Park.
Cerro Armazones in the Chilean Andes.
Utah's Bryce Canyon.
Clayton Lake Dark Sky Park in New Mexico.
The UK's Northumberland Dark Sky Park.
Pennsylvania's Cherry Springs State Park.
The wild desert of Sedona, Arizona.
Scotland's Galloway Forest Park.
Quebec's Mont-Megantic National Park.
Hungary's Zselic Starry Sky Park.
Namibia's NamibRand International Dark Sky Reserve.
The often-photographed Atacama Desert in Chile.
Ohio's Observatory Park in the Geauga Park District.
California's Death Valley National Park.
New Zealand's Aoraki Mackenzie International Dark Sky Reserve.
Hungary's Hortobagy National Park.
The Jasper National Park in Alberta, Canada.
Arizona's Grand Canyon.
Canada's Moraine Lake in the Banff National Park.
The Spanish Canary Islands in La Palma.
Nevada's Great Basin National Park.
Australia's Wiruna in New South Wales.
The French Pic du Midi Dark Sky Reserve.
Alaska's Denali National Park.
La Fortuna in Costa Rica.
Poloniny Dark Sky Park in Slovakia.
The UK's Exmoor National Park.
North Carolina's Blue Ridge Observatory and Star Park.
Michigan's Headlands Dark Sky Park.
The Brecon Beacons National Park in Wales, United Kingdom.
Florida's Big Pine Key.
California's Joshua Tree National Park.
Musala in Bulgaria.
The Natural Bridges International Dark Sky Park in Utah.
The White Mountains of California.
The Big Bend International Dark Sky Park in Texas.
Churchill Manitoba in Canada.
Colorado's Rocky Mountain National Park.
The German Westhavelland Dark Sky Reserve.
The Texan McDonald Observatory.
Mauna Kea in Hawaii.
Ireland's Kerry International Dark Sky Reserve.
Paranal in Chile.
Canadian Kejimkujik National Park in Nova Scotia.
Hotel Elqui Domos in Chile.
Maine's Acadia National Park.