1. A method of providing a user with an extra-terrestrial somatosensory experience, the method comprising: equipping the user with an underwater breathing apparatus; having the user occupy an underwater environment, such environment providing buoyancy to the user; and while the user occupies the underwater environment, using a computer-implemented virtual reality system to present to the user a virtual reality environment modeling an extra-terrestrial setting, the virtual reality system inhibiting visual perception by the user of items outside of the virtual reality environment, wherein using a computer-implemented virtual reality system includes having the user don a head-mounted display system, such display system including at least one sensor to identify at least one position of the user's head, wherein the display system and the sensors form a part of the computer-implemented virtual reality system; so that the user experiences the virtual reality environment under a buoyancy condition provided by the underwater environment, such buoyancy condition enhancing experience of the virtual reality environment.