Gravitation

Many years ago, a mathematician named Johannes Kepler created a set of rules explaining planets' movement in our Solar System.

Did you know that what you weigh depends on the strength of gravity? And did you know that the strength on gravity on other planets is not the same as on Earth?

You have likely heard about the Universe expanding. Or that redshift can tell us about the movements of galaxies. Both are difficult ideas to imagine and understand.

Ever wondered how heavy or light you would feel on another planet in our Solar System?

The level of the sea rises and falls about 2 times each day. We call these changes tides. But what causes them?

Is gravity the same everywhere? Experiment with how the ball reacts in each of the Solar System locations by dropping or throwing the ball. How similar or different is each location to Earth?