The most conservative estimate for that fine tuning is 1 part in 1053, but the number 1 part in 10120 is more frequently cited.19 Physicists now commonly agree that the degree of fine tuning for the cosmological constant is no less than 1 part in 1090.20 To get a sense of what this number means, imagine searching the vastness of the visible universe for one specially marked subatomic particle.
