Space missions were part of the mythology of the twentieth century. Today, space exploration has changed dramatically, including the exciting possibility of commercial space exploration. In this fascinating anthology, expert viewpoints explore the potential of space tourism, robot astronauts, and colonizing Mars. But is commercial space travel sustainable? Should average citizens take such risks to their personal safety? Is talk of commercial space exploration merely a gimmick, or is it the future? Experts disagree, but readers will be able to reach their own conclusions after reading the diverse opinions on the subject.