We've made huge strides towards finding exoplanets and surveying the other worlds in our solar system recently — but most of us will never know what it's like to stand on another soil, especially under another sun. Good thing there are a lot of places on Earth that you could easily mistake for strange new worlds.
Richat Structure (also known as the Eye of the Sahara), a circular structure in the Sahara desert near Ouadane, Mauritania
(via NASA and Google Maps)
Etosha pan in Namibia, similar to the Saturn's largest moon, Titan. The shallow hydrocarbon lakes on Titan are behaving like a salt pan on Earth.
During wet season
Waiotapu (or Wai-O-Tapu) in new Zealand's Taupo Volcanic Zone with colorful hot springs
Atacama Desert, Chile, used by NASA to test instruments (the Viking 1, Viking 2 and Phoenix Mars Lander, among others) for future Mars Missions
Salar de Uyuni, the world's largest salt flat (10,582 sq km or 4,086 sq mi) in southwest Bolivia, contains at least the half of the world's lithium reserves
Great Blue Hole, a 406 ft (124 m) deep circular submarine sinkhole Belize with a radius of 984 ft (300 m), formed during quaternary glaciation and made famous by Jacques Cousteau as a scuba diving site.
Devon Island, Canada, the largest uninhabited island on Earth and the testing location of Mars rovers and the home of the Haughton-Mars Project.
Huanglong, northwest Sichuan, China, known for some colorful pools formed by calcite deposits.
Vale da Lua (Valley of the Moon) in Chapada dos Veadeiros National Park, Brazil with some of the oldest rock formations on Earth
Teide National Park, Tenerife, Canary Islands, Spain, the testing place of instruments build for reveal life on Mars.
The isolated island of Socotra (or Soqotra), Yemen
Rio Tinto, the red river due to iron dissolved in the water in Spain. It has been mined since 3000 BC. Now the river is very acidic (pH 2) and only extremophile aerobic bacterias could survive.
Spotted Lake (or Kliluk), near the city of Osoyoos in British Columbia, Canada, containing the highest quantities of sodium and magnesium sulfates and calcium in the world, but there are silver, titanium, sulphates and some other minerals, too.
The windy McMurdo Dry Valleys in Antarctica without snow. Here is the longest river (or rather, meltwater steam) of the continent named the Onyx. There are no fish, but it supports microscopic life.