Arquitecture of the Cosmos

http://www.youtube.com/watch?v=qxXf7AJZ73A

By chapters:

Cap1
www.youtube.com/watch?v=Cy-LlaMZ058&feature=related
Cap2
www.youtube.com/watch?v=EPJBZKYFTMA&feature=related
Cap3
www.youtube.com/watch?v=gwj5ZEgpozA&feature=related
Cap4
www.youtube.com/watch?v=NsMGjyw1j6U&feature=related