Pirgavi36

Pero perić2456

Power System | Solar panels supply power and charge the batteries for the habitat. If juice levels fall below 5 percent, a hydrogen fuel cell kicks in.

Workshop & Airlock | Crew can use the 3-D printer to make

hair clips, replacement parts, and anything else they forgot back on 

Earth. This area is also the door to the surface; they simulate depressurization and pressurization before and after sorties.

Composting Toilets | Repurposed poop (sans pathogens) from one mission might be plant food for the next one.

Bedrooms | Six pie-slice-shaped staterooms each contain a mattress, a desk, and a stool. Clothing goes under the bed, which sits at the wide side of the slice. Cozy like a closet.

Workout Area | Everyone exercises in shifts, often to videos like P90X and Insanity. Other workouts: juggling and balloon volleyball.

Communications | Mars is up to 24 minutes away as the photon flies, so crews have NASA-issued email addresses with an artificial delay and access to a web made of cached, nondynamic pages.

High Ceilings | The 36-foot-diameter dome has a living area of about 1,000 square feet, and the second level is a loftlike partial floor. To long-term inhabitants, these spaces appear to shrink over time, so high ceilings are crucial.