NASA last week narrowed to five the number of lunar landing sites being considered for Apollo astronauts. Two of the three-mile by five-mile elliptical landing zones are in the Ocean of Storms on the west side of the visible face of the moon, one in the appropriately named Central Bay and two in the easterly Sea of Tranquillity. All are relatively smooth and unobstructed, giving the astronauts a good chance of selecting a spot that is free of boulders, ridges or rifts that could endanger the landing of the lunar module (LM).
The sites have more in common: all lie...
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