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?
Why Does the Earth Have Tides?
The level of the sea rises and falls about 2 times each day. We call these changes tides. But what causes them?
Gravity Simulator
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?
Karl Schwarzschild
Occupation: Physicist & Astronomer
Year born: 1873
Research Areas: Relativity, Black Holes, Quantum Theory, Stars, Comets
"Mathematics, physics, chemistry, astronomy, march in one front."
Stephen Hawking
Occupation: Physicist & Author
Year born: 1942
Research Areas: Cosmology, Theoretical Physics