Human analog missions

artificial closed ecological system

research station on the Antarctic Plateau, Antarctica

thumb|right|The mission's official logo

NASA Extreme Environment Mission Operations, or NEEMO, is a NASA analog mission that sends groups of astronauts, engineers and scientists to live in the Aquarius underwater laboratory, the world's only undersea research station, for up to three weeks at a time in preparation for future space exploration.

American scientific submarine, now a museum ship in Canada

BIOS-3 is an experimental closed ecosystem at the Institute of Biophysics in Krasnoyarsk, Russia.

The SeaOrbiter, also known as Sea Orbiter (two words), is a proposed oceangoing research vessel based on the ideas of French architect and oceanographer Jacques Rougerie. Construction was due to start in 2014 but by May 2015, only the Eye of SeaOrbiter has been completed, and as of 2024, there is no news of any other construction.

largest and longest-running Mars surface

geographical object