This never before seen 4 dimensional form is based on the idea of triangles wrapped around a sphere to create the Vector Equilibrium. The best place to find out more about the VE is
here
Here we have 10 tetrahedrons wrapped around a hypersphere (and then of course they are projected back into 3D space so that we can see them).
Here is the closest 2 dimensional equivalent using 8 triangles (including the grey one at the back) that could be folded up into a vector equilibrium.