Explore numerous articles and activities about space using the Space Odyssey collection .
Students can explore forces and the laws that govern forces .
By using Circular orbits , students can explore how increasing orbital distance affects the velocity required to keep a satellite on a circular orbit. With Data for the Earth , students put satellites in circular orbits around the Earth and record revolution times for various radii. Students can investigate Kepler's Second Law . Using Orbiting Jupiter , students manipulate a planet's mass to set the moons in proper orbits and determine the mass of Jupiter. Logal Express is needed to launch the above simulations.