Age of the Earth

Age of the Earth (4.54 billion y)



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 ...

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Is That a Big Number? - the book - is now available from all good booksellers.

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