The leaders in commercial space tourism already claim they have a market to support the industry. While Jeff Bezos hinted the price would eventually come down — as eventually happened with the high prices of the nascent airline industry — for now, ticket prices are in the low hundreds of thousand...

Right now, it’s not entirely clear just how risky space tourism is.

• One way space tourism companies are trying to keep travelers safe is by requiring training so that the people who are taking a brief sojourn off Earth are as prepared as possible.
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• The Federal Aviation Administration (FAA) has generally been given the job of overseeing the commercial space industry. But regulation of space is still relatively meager.
• One of the biggest areas of concern is licensing launches and making sure that...

• The emissions of a flight to space can be worse than those of a typical airplane flight because just a few people hop aboard, so the emissions per passenger are much higher. That pollution could become much worse if space tourism becomes more popular.
• The car...