大象传媒

Professor Brian Cox simulates the strength of gravity on other planets using a centrifuge in Holland.

Gravity is the force that keeps our feet on the ground. Although it may appear constant and unchanging, this force varies on all the planets in the solar system and on the exoplanets orbiting other stars. The greater the planet's mass, the greater the force of gravity.

Brian gets inside the centrifuge to experience what it would be like to stand on the surface of Neptune, Jupiter, OGLE2-TR-L9b and WASP-8b, which has a gravitation force 5 times that of Earth.