December 21, 2015 1:52 PM EST

Famed astrophysicist Neil deGrasse Tyson tried to ruin Star Wars on Twitter on Monday. In a series of tweets, Tyson offered scientific critiques after viewing the film, which debuted in theaters last week. There were only a few mild spoilers in the Twitter chat, but few took fondly to the scientist’s rebuke of beloved robot BB-8.

In case you missed it on Twitter, here’s some of what Tyson said. Read at your own risk.

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