Gravitation3D

Welcome to the home site of Gravitation3D, an elegant and beautiful shareware program aimed at providing an intuitive understanding of the laws of gravity and having fun.

Gravitation3D is unique among astronomy software because you get to create. It is not about exploring what we have observed out there, but rather about imagining what is possible and constructing it!

NEW! The G3D Screen Saver is finally here! Have it cycle through the systems you've created or simply download G3D Systems of the Day from the web to see new simulations all the time.

NEW! I am now posting a computer generated system daily! So after installing Gravitation3D, keep returning for the G3D System of the Day. These are created somewhat randomly and result in lots of interesting surprises. My hope is that they will give you some good starting points and ideas for your own systems. You will have continuing access to all these as the G3D System of the Day Archive grows.