Did you know? Mass of R2-D2 droid in the Star Wars movies (32 kg) is 20 x Mass of a bottle of champagne (1.6 kg) Tweet this comparison
Energy to lift an 82 kg person 1m (780 J)
/fact/energy-to-lift-an-82-kg-person-1m
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"This is a fun and riveting book. Written in an accessible and engaging way, it is unputdownable." Frost Magazine
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