Explore Gravity
Use our simulator to investigate the effect of gravity on other worlds. Then use your measurements and a bit of maths to calculate the strength of gravity in each location across the Solar System!
Kepler's Laws: Find the Mass of the Sun
Many years ago, a mathematician named Johannes Kepler created a set of rules explaining planets' movement in our Solar System.
Calculate Your Weight on Another Planet
Create An Expanding Universe
The 'Space Weight' Calculator
Ever wondered how heavy or light you would feel on another planet in our Solar System?