This photo provided by Image Box Inc. shows Google co-founder Sergey Brin, center, as he trains in zero gravity in airspace above northern California, earlier this year. Space Adventures, the company that sends wealthy tourists to the International Space Station, said Wednesday that Brin has paid $5 million to reserve a seat on a future flight. For Andrew Zahler's SR Today In Pictures, click here.Story here.

Question: What do you think of the got-rocks crowd booking the ultimate thrill ride aboard space crafts?

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