Saguaro 'family' and Milky Way, Saguaro National Park, Arizona

An ichthyosaur fossil of the Jurassic period, Dinosaurland Fossil Museum, Lyme Regis, Dorset, England

Saint-Malo in Brittany, France

The Clan House at Totem Bight State Historical Park near Ketchikan, Alaska

Rainbow abalone shell, New Zealand

Sandhill cranes and mallard ducks, Bosque del Apache National Wildlife Refuge, New Mexico

Common octopus off the coast of France in the Mediterranean Sea

Huay Mae Khamin Waterfall in Khuean Srinagarindra National Park, Thailand

Dallas Divide in southwest Colorado

Kindergarteners drawing on canvases in Nantong, Jiangsu province, China

Andromeda galaxy

The Roman amphitheater of Itálica, near Seville, Spain

The Ivishak River in the North Slope of Alaska

Hyacinth macaws in the Pantanal region of Brazil

Container ship in San Pedro, California

A wood bison near Behchoko, in the Northwest Territories, Canada

Mount Fuji in Japan

Thorn bug, Pico Bonito National Park, Honduras

The Mackenzie River in Canada emptying into the Beaufort Sea

Escarpment Trail in Porcupine Mountains Wilderness State Park, Michigan