Many of us dream of flying to space.
But how about entering outer space on a rocket plane twice?
This is an incredible true story of Joseph Walker who flew to the edge of space.
He dreamed of making the first-ever suborbital plane flight - and his dream came true.
Despite all the risks of the X-15 program, the courageous pilot pushed the very limits of their piloting skills and physical health to master groundbreaking technology.
Let's listen to this true story.
