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 ...

For example, Jupiter is the most massive planet in our solar system. It’s so big, it could swallow 1,000 Earths. So it requires a very high escape speed: 133,100 mph (about 214,000 kilometers per hour ...

A balloon is taped to a straw. The straw is free to move along a length of tight thread. The balloon is held at the neck so that air does not escape from the balloon. The balloon is then released ...