Egmont National Park in New Zealand with Mt. Taranaki at its center. Photo by Handout.

The big island of Hawaii is seen in this image taken by European Space Agency astronaut Samantha Cristoforetti from the International Space Station. Photo by Samantha Cristoforetti from NASA.

An aerial view of the Iguazu Falls is seen in the Argentinian northwest province of Misiones. Photo by Raul Puentes.

An aerial view of a public cemetery ahead of the Qingming Festival, or Tomb Sweeping Day in Hangzhou, Zhejiang province, China. Photo by Stringer CHINA.

Late summer plankton blooms across much of Lake Ontario, one of North America’s Great Lakes, Canada. Photo by NASA.

Oil goes into a tailings pond at the Suncor tar sands operations near Fort McMurray, Alberta, Canada. Photo by Todd Korol.

An aerial view shows Doha’s diplomatic area, Qatar. Photo by Fadi Al-Assaad.

A general view of a road next to sand dunes covered in vegetation in the Pilbara region of Western Australia. Photo by David Gray.

A NASA satellite image from September 16, 2007 and released on September 21, 2007, shows Arctic summer sea ice. Photo by NASA.

Layers of Earth’s atmosphere, brightly colored as the sun sets, are featured in this image photographed by a STS-127 crew member on the Earth-orbiting Space Shuttle Endeavour. Photo by NASA.

A houseboat camps on the shore in shallow water in a canyon at Lake Powell near Page, Arizona, U.S. Photo by Rick Wilking.

Japan’s Mount Fuji is seen covered with snow from an airplane. Mount Fuji, at 3,776 metres (12,388 feet), is Japan’s highest mountain and was granted UNESCO World Heritage site in June 2013. Photo by Issei Kato.