On the one hand, they got a big detail about their dragons absolutely right... but on the other, they also got something glaringly wrong when it comes to how chains work.
Tyson, the best-selling author and director of theHayden Planetariumat the American Museum of Natural History in New York, explained it all in a series of tweets on Sunday:
Everybody all caught up on#GameOfThrones? I have a comment or two, if anybody is interested…— Neil deGrasse Tyson (@neiltyson) September 24, 2017
I thought the frozen dead dudes couldn’t swim, but aside from that…— Neil deGrasse Tyson (@neiltyson) September 24, 2017
This article originally appeared on HuffPost.