Most of the 1-star ratings I've read are simply about the acquisition and/or customer service process unavoidably attached to this medium, Amazon. The product itself is just as good as the first season, better in my opinion, and those reviews should reflect that.
Possible Worlds is proving to be yet another magnificent achievement in the world of edutainment. I couldn't be happier with the dramatization of these titans of science, accompanied by visuals that can't be beat save for a planetarium. Amidst all of that, we learn about underlying scientific principles and discoveries that are obscure lest you have the fortune of a great teacher who revealed them to you prior. If you have enjoyed any of the previous Cosmos, this new season will not disappoint. I can only pray that Neil and this team will come back for at least one more round with a 3rd season. As the Temptations once sang, I ain't too proud to beg.