Did you know? Mass of Deimos (moon of Mars) (2 quadrillion kg) is 200 x Mass of Comet 67P, Rosetta's Comet (10 trillion kg)
Length of the Blue Whale skeleton in London's Natural History Museum (25.2 m)
/fact/length-of-the-blue-whale-skeleton-in-londons-natural-history-museum
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If this was a standard unit ...