Orbit simulator software: Educational orbit and gravitation simulator, Swing around solar systems and bash aliens!, Drop black holes and move planets for points! and more.
1st Light is a fully interactive 3D solar system creation tool and screensaver. The free version is fully functional for viewing and allows users to view and load any solar system. The paid version allows users to create their own solar system with any number of planets and moons. They can also texture the solar bodies (as well as the enclosing universe), and apply lighting, highlights, atmospheres and all their characteristics.
Educational orbit and gravitation simulator for high school, college and beginning university physics and astronomy. Easily create, run, print and save a simulation. Includes 29 introductory to advanced premade simulations with activities page in html-format. Uses actual pictures of planets. Plot orbits in a plane or in 3D. View time, distances, speeds, accelerations and energies as they change. Zoom and change parameters during the simulation.