In the late 1970s, two well known scientists made a presentation of the group's effort to the U.S. Congress. The scientists testified to Congress that a space station could be built. Congress was told it would take about 3,000 people living on the moon and in space, that it would cost about $106 billon (late 1970s) dollars, that it would take about 30 years to build and it would support about 10,000 inhabitants when finished.