Anyone know if NASA (or anyone else) has done studies on the smallest space most people can live in 24/7 for at least 5 years without suffering mental health issues?
EDIT: I'm thinking about long term underwater habitats. Going ~100 ft underwater solves a lot of problems with waves/storms, but it's expensive to build structures designed to operate a long time at that depth. So, the smaller the better.
EDIT: I'm thinking about long term underwater habitats. Going ~100 ft underwater solves a lot of problems with waves/storms, but it's expensive to build structures designed to operate a long time at that depth. So, the smaller the better.