Bigelow hopes to have habitats going to the moon in about a decade, providing structures for commercial mining operations or research. He's working with the Federal Aviation Administration to develop policies that will grant some sort of property rights to companies that risk lives and treasure to get to the moon.

Why the FAA? That agency issues launch licenses, and in the future, Bigelow said the FAA is planning to restrict licenses so that one American company is blocked from planning a trip to the exact spot on the moon where another U.S. venture has already set up shop. Whether other countries will respect such private commercial claims remains to be seen.

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A lot still needs to be worked out. "The next step is probably, 'What is this boundary where you are sufficiently safe?'" Bigelow asked. "What is this standoff distance?'" He thinks a buffer zone on the moon between commercial neighbors may have to be greater than 100 miles. "I think it has to be a fair distance."

As for astronaut Zamka, it's been a change moving from NASA to a small private venture. But he's enjoying himself. "I was in the Marines, and one of the things I liked about being in the Marines is there's not that many of us, so when there's not that many of you, you get to do more things," he said.

While the private sector isn't currently giving him astronomical pay, he sees astronomical potential, and the chance to return to space, this time as a commercial astronaut. "We're doing tremendously interesting stuff," said Zamka, "and I get to be more directly involved with more parts of that."

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