A space tourism firm has completed the first successful test flight of its balloon, which saw it float 23 miles (37 kilometres) into the stratosphere.
Madrid-based company Halo Space flew an unmanned prototype for 4 hours and 10 minutes, before landing it safely in a designated area.
The company is planning to offer its 'zero emission' commercial flights aboard a stylish circular capsule attached to an inflated balloon from 2029, and from then on will carry 3,000 passengers on 400 trips every year.
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