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Mass of Gulfstream G650 business jet (45,400 kg) is 500 x Mass of lightest allowable Heavyweight boxer (90.8 kg)
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Mass of Rhea (moon of Saturn) (2.31 sextillion kg)
If this was a standard unit ...
"This is a fun and riveting book. Written in an accessible and engaging way, it is unputdownable." Frost Magazine
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