HALO Space, a Madrid-based space tourism company, had their first successful test flight last week, which floated 37 km into the stratosphere. The balloon prototype didn't have anybody on it and was in the sky for 4 hours and 10 minutes before safely landing in a designated area. Commercial flights are expected to begin in 2029, carrying 3,000 passengers and 400 trips annually, each at a cost of US$200,000/ticket.
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