Skylab weighed about 100 tons, and its launch marked the last launch of the wonderful Saturn V, the rocket that never failed. It had a volume of 283.17 cubic meters and was separated into two "floors; "the "upper" floor contained storage lockers and a large empty space for conducting experiments, and two airlocks, one pointed "down" toward the earth and the other "up" toward the sun; the "lower" floor was divided into rooms including a dining room with a table, three bedrooms, a work area, a bathroom and a shower. The floors consisted of an open gridwork that fit cleats on the bottom of the astronauts' shoes.

The station was also equipped with an airlock module for the many spacewalks that were required to change film in the external cameras and make repairs to the station. The Apollo Command and Service Modules remained attached to the station's docking mechanism for the duration of the astronauts' stays aboard the station.

Skylabs' "upper" floor contained storage lockers and a large empty space for conducting experiments, and two airlocks, one pointed "down" toward the earth and the other "up" toward the sun. They conducted many experiments with spiders and student made experiments.

Skylabs' "lower" floor was divided into rooms including a dining room with a table, three bedrooms, a work area, a bathroom, and a shower. The floors consisted of an open gridwork that fit cleats on the bottom of the astronauts' shoes. This where the Astronauts slept, ate, and spent there down time.