exercise. The afternoon is allocated to the personal research of the individual crew members in their own areas of expertise. And the evenings are spent taking care of administrative duties, more exercise, and of extreme importance, time off. Another issue addressed was man's need for views. This found its resolution in a very successful application of multiple use. There was for some time a dilemma as to the appropriate location of the windows. Obviously, one wants a window at the wardroom table, which provides a breathtaking view of Earth, the Moon, or deep space. But where and when can one see the rest of SPORE? One has to look straight up. The problem was then to locate the windows in positions so as to avoid neck strain. The solution was in each of the four bedrooms. Lying in bed, the crew members are reminded of their relation to SPORE as a community; each component is separate for the purpose, but a unit for the mission. And the view is quite breathtaking as illustrated in Fig. 6. One can see from Fig. 7 that life on SPORE is rather homey. Figure 7 depicts two cross-sectional views of the central space of a typical component, from the center of the room to either end, where the ship ladders lead up to the bedrooms and down to the medical, botanical, and marine laboratories which are below the bedrooms. Figure 8 provides the plans of a typical component and Fig 9 provides three sections, two taken crosswise and one lengthwise. From these two figures, the split level suburban home configuration of interior space becomes evident. Upon exit from the elevators, one walks/floats in an upright position, maintaining the same orientation as was established in the central hub and elevators, down and around the corridors, a choice of two, to the entrance hatches. (At these points there is also a capability for emergency docking by the Shuttle orbiter opposite the entrance hatches.) One must enter the component at the tips of the cones; therefore, there is not sufficient head room, making it necessary to sit on a landing, swing around, and step down into the control/monitoring room; below is storage space. The point of entrance is also the point of realization that one is now in the cocoon of the component, different from SPORE as a whole, but certainly one of its parts. Now in the shirt-sleeve environment of the control room, having removed and stored the space suits, one has a choice, either to go half a level up to two of the bedrooms, or down half a flight into the marine laboratory space. Note that it is these choices that fulfill the safety requirement that there be at least two means of egress from every habita-
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