Did you know? Mass of Proteus (moon of Neptune) (50.4 quintillion kg) is 25 thousand x Mass of Deimos (moon of Mars) (2 quadrillion kg)
Time since the end of the Precambrian supereon, explosion of life forms (541 million y)
/fact/time-since-the-end-of-the-precambrian-supereon-explosion-of-life-forms
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If this was a standard unit ...