There seems to be some controversy regarding the above stated, i.e. the earth revolving around the sun. But when observing the model rotating it seemed to me that indeed -as was said in the video- the earth did move around the sun in a spiral which is quite different then it making a circle.
The difference is that a circle would be stationary and creates a two dimensional space but a spiral creates a three dimensional space. In the latter case the earth would end up in a different space than when she started her rotation.This brings us (again) to the fibonacci sequence and/or numbers. To find out more about this i suggest taking a look at the writings of Gregg Braden.
Meanwhile enjoy the beautiful views in this video!