In a vertical wind tunnel that’s blowing air upward at 270 km/h (168 mph), four ‘skydiving’ acrobats perform a twisting, turning flying routine without ever colliding into each other. How do they perform epic looking stunts with so much control? The physics is explained in this clip from Outrageous Acts of Science.

In the archives: This Prague-based wind tunnel is internet famous. Watch more flying, plus a lesson where you can see more of the wind dynamics in play.

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