Description
G allows you to quickly experiment the effects of the Universal Gravitation by adding bodies into a simulation, seeing how they react to each other in real time, all in a true multitouch environment. G offers a vast universe to add your bodies into, potentially allowing you to create stable planetary systems, binary star systems, and other multiple-body complex systems.
History
G became a project while I was watching episode 4 of Carl Sagan's Cosmos series. Those amazing old school animations really got me, I had to make those interactive. 