Did you know? Duration of Mughal Empire (332 y) is 2 x Period of Neptune's orbit (164.8 y)
Height of Mons Huygens (highest point on the moon) (5.5 km)
/fact/height-of-mons-huygens-highest-point-on-the-moon
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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.