PongSat embodies John Powell’s belief in access to near-space science for everyone ... the size of the experiment, sending it up with balloons instead of rockets, and settling for a trip ...

This jet of air functions like jet force and propels the balloon forwards. Rocket engines function according to the exact same principle: as the fuel burns inside the rocket, the gases produced escape ...

They experiment ... using balloon-powered propulsion. These models mirror the difference between road cars, in which the engine powers the wheels, and Bloodhound, which is jet engine rocket ...