Did you know? Cruising altitude of Airbus commercial jet (13 km) is 200 x Height of Sydney Opera House (65 m)
Mass of Phobos (moon of Mars) (10.8 quadrillion kg)
/fact/mass-of-phobos-moon-of-mars
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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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Click here for Podcast: Andrew Elliott interviewed for New Books Network.