Fine-tuned universe

The fine-tuned universe is the hypothesis that, because "life as we know it" could not exist if the constants of nature – such as the electron charge, the gravitational constant and others – had been even slightly different, our universe is tuned specifically for life.^[1]^[2]^[3]^[4] In practice, this hypothesis is formulated in terms of dimensionless physical constants.^[5]

^ Rees, Martin (3 May 2001). Just Six Numbers: The Deep Forces That Shape The Universe (1st American ed.). New York: Basic Books. p. 4.
^ Gribbin. J and Rees. M, Cosmic Coincidences: Dark Matter, Mankind, and Anthropic Cosmology pp. 7, 269, 1989, ISBN 0-553-34740-3
^ Davis, Paul (2007). Cosmic Jackpot: Why Our Universe Is Just Right for Life. New York: Orion Publications. p. 2. ISBN 978-0-61859226-5.
^ Cite error: The named reference :2 was invoked but never defined (see the help page).
^ "Fine-Tuning". The Stanford Encyclopedia of Philosophy. Center for the Study of Language and Information (CSLI), Stanford University. 22 August 2017. Retrieved 18 January 2020.