The cover of Just Six Numbers: The Deep Forces That Shape the Universe

Just Six Numbers: The Deep Forces That Shape the Universe

Which six numbers fix the shape of the universe, and why would life be impossible if they were slightly different?

At a glance

Author
Martin Rees

Why read it

  • You will see why gravity is far weaker than the electrical forces in atoms, and how that sets the scale of the cosmos
  • You will understand how a universe with the wrong expansion rate would produce no galaxies or stars
  • You will question whether our universe is a lucky oasis among many or has some deeper reason for its numbers

Who it is for

  • Curious reader who wonders why the universe permits life
  • Amateur astronomer wanting the big picture of cosmology
  • Student weighing the case for a multiverse

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