Actual rocket science on the Principia website. Not the kind of rocket you're expecting, though. https://t.co/35IlUQe6rC
— Simon Dickson (@simond) December 13, 2015
Actual rocket science on the Principia website. Not the kind of rocket you're expecting, though. https://t.co/35IlUQe6rC
— Simon Dickson (@simond) December 13, 2015