Scale of the Universe 2 Really good on the large scale!
Few problems with the smaller particles tho.
Size of particles from biggest to smallest: Top, Bottom, Charm, Strange, Down, Up (I believe you got them backwards)... (Source: Wikipedia and http://3.bp.blogspot.com/_M0jx8Outk4Q/TOUUOBQaSaI/AAAAAAAAAFg/yxHs0I89Mrg/s1600/SMMassSize.png)
Great animation and great music! Looking forward to further improvements!