The next era in satellite technology?
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Is it a balloon or a plane?

Scientists say unmanned aerial vehicles powered by variable-buoyancy propulsion could be the future of satellites.

A team led by Prof Andrew Rae, from the University of the Highlands and Islands, say they have created the world's first large-scale aircraft powered by variable-buoyancy propulsion.

Future versions of Phoenix could be fitted with cameras and deployed in surveillance work.

  • 23 Apr 2019