Age of the Earth

Age of the Earth (4.54 billion y)

/fact/age-of-the-earth

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Neat Ratios ...

Age of the Earth (4.54 billion y)

is about as big as Time since the start of the formation of the Solar System (4.6 billion y)...more
is 20 x Galactic Year (period of rotation of the Milky Way galaxy) (225 million y)...more
is 200 x Time since the end of the Paleogene geologic period (23 million y)...more

If this was a standard unit ...