List of Mars analogs

This is list of Mars analogs, which simulate aspects of the conditions human beings could experience during a future mission to Mars.

For example, in the 1960s the Soviets confined three cosmonauts for a year to prepare for longer space missions. Modern examples include an 120-day study in Hawaii to test a space food diet, and equipment tests inside Austrian mountain caves in 2012.

Mars analogs are sometimes chosen for their location, for example, Devon island is at 75°N latitude which provides solar radiance similar to the Martian Equator. Similarly, high altitudes can provide an equivalent to the low pressure of the Mars atmosphere

Among these are:

At about 28 miles (45 km) Earth altitude the pressure starts to be equivalent to Mars.