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.
I have started a G3D blog for
public answers to questions, update information, and discussion of interesting
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!