Evidence for the Fine Tuning of the Universe

The constants of the laws of physics have been finely tuned to a degree  not possible through human engineering, Four of the more finely tuned numbers are included in the table below. For comments about what scientists think about these numbers, see the page Quotes from Scientists Regarding Design of the Universe

Recent Studies have confirmed the fine tuning of the cosmological constant. This cosmological constant is a force that increases with the increasing size of the universe. First hypothesized by Albert Einstein, the cosmological constant was rejected by him, because of lack of real world data. However, recent supernova 1A data demonstrated the existence of a cosmological constant that probably made up for the lack of light and dark matter in the universe.² However, the data was tentative, since there was some variability among observations. Recent cosmic microwave background (CMB) measurement not only demonstrate the existence of the cosmological constant, but the value of the constant. It turns out that the value of the cosmological constant exactly makes up for the lack of matter in the universe.³

The degree of fine-tuning is difficult to imagine. Dr. Ross gives an example of the least fine-tuned of the above four examples in his book, The Creator and the Cosmos, which is reproduced here:

One part in 10³⁷ is such an incredibly sensitive balance that it is hard to visualize. The following analogy might help: Cover the entire North American continent in dimes all the way up to the moon, a height of about 239,000 miles (In comparison, the money to pay for the U.S. federal government debt would cover one square mile less than two feet deep with dimes.). Next, pile dimes from here to the moon on a billion other continents the same size as North America. Paint one dime red and mix it into the billion of piles of dimes. Blindfold a friend and ask him to pick out one dime. The odds that he will pick the red dime are one in 10³⁷. (p. 115)

Fine Tuning Parameters for the Universe

1. strong nuclear force constant
   if larger: no hydrogen would form; atomic nuclei for most life-essential elements would be unstable; thus, no life chemistry
   if smaller: no elements heavier than hydrogen would form: again, no life chemistry
2. weak nuclear force constant
   if larger: too much hydrogen would convert to helium in big bang; hence, stars would convert too much matter into heavy elements making life chemistry impossible
   if smaller: too little helium would be produced from big bang; hence, stars would convert too little matter into heavy elements making life chemistry impossible
3. gravitational force constant
   if larger: stars would be too hot and would burn too rapidly and too unevenly for life chemistry if smaller: stars would be too cool to ignite nuclear fusion; thus, many of the elements needed for life chemistry would never form
4. electromagnetic force constant
   if greater: chemical bonding would be disrupted; elements more massive than boron would be unstable to fission
   if lesser: chemical bonding would be insufficient for life chemistry
5. ratio of electromagnetic force constant to gravitational force constant
   if larger: all stars would be at least 40% more massive than the sun; hence, stellar burning would be too brief and too uneven for life support if smaller: all stars would be at least 20% less massive than the sun, thus incapable of producing heavy elements
6. ratio of electron to proton mass
   if larger: chemical bonding would be insufficient for life chemistry
   if smaller: same as above
7. ratio of number of protons to number of electrons
   if larger: electromagnetism would dominate gravity, preventing galaxy, star, and planet formation if smaller: same as above
8. expansion rate of the universe
   if larger: no galaxies would form if smaller: universe would collapse, even before stars formed
9. entropy level of the universe
   if larger: stars would not form within proto-galaxies if smaller: no proto-galaxies would form
10. mass density of the universe
    if larger: overabundance of deuterium from big bang would cause stars to burn rapidly, too rapidly for life to form
    if smaller: insufficient helium from big bang would result in a shortage of heavy elements
11. velocity of light
    if faster: stars would be too luminous for life support if slower: stars would be insufficiently luminous for life support
12. age of the universe
    if older: no solar-type stars in a stable burning phase would exist in the right (for life) part of the galaxy if younger: solar-type stars in a stable burning phase would not yet have formed
13. initial uniformity of radiation
    if more uniform: stars, star clusters, and galaxies would not have formed
    if less uniform: universe by now would be mostly black holes and empty space
14. average distance between galaxies
    if larger: star formation late enough in the history of the universe would be hampered by lack of material if smaller: gravitational tug-of-wars would destabilize the sun's orbit
15. density of galaxy cluster
    if denser: galaxy collisions and mergers would disrupt the sun's orbit
    if less dense: star formation late enough in the history of the universe would be hampered by lack of material
16. average distance between stars
    if larger: heavy element density would be too sparse for rocky planets to form if smaller: planetary orbits would be too unstable for life
17. fine structure constant (describing the fine-structure splitting of spectral lines) if larger: all stars would be at least 30% less massive than the sun
    if larger than 0.06: matter would be unstable in large magnetic fields
    if smaller: all stars would be at least 80% more massive than the sun
18. decay rate of protons
    if greater: life would be exterminated by the release of radiation
    if smaller: universe would contain insufficient matter for life
19. 12C to ¹⁶O nuclear energy level ratio
    if larger: universe would contain insufficient oxygen for life
    if smaller: universe would contain insufficient carbon for life
20. ground state energy level for ⁴He
    if larger: universe would contain insufficient carbon and oxygen for life if smaller: same as above
21. decay rate of ⁸Be
    if slower: heavy element fusion would generate catastrophic explosions in all the stars
    if faster: no element heavier than beryllium would form; thus, no life chemistry
22. ratio of neutron mass to proton mass
    if higher: neutron decay would yield too few neutrons for the formation of many life-essential elements if lower: neutron decay would produce so many neutrons as to collapse all stars into neutron stars or black holes
23. initial excess of nucleons over anti-nucleons
    if greater: radiation would prohibit planet formation if lesser: matter would be insufficient for galaxy or star formation
24. polarity of the water molecule
    if greater: heat of fusion and vaporization would be too high for life
    if smaller: heat of fusion and vaporization would be too low for life; liquid water would not work as a solvent for life chemistry; ice would not float, and a runaway freeze-up would result
25. supernovae eruptions
    if too close, too frequent, or too late: radiation would exterminate life on the planet
    if too distant, too infrequent, or too soon: heavy elements would be too sparse for rocky planets to form
26. white dwarf binaries
    if too few: insufficient fluorine would exist for life chemistry
    if too many: planetary orbits would be too unstable for life
    if formed too soon: insufficient fluorine production if formed too late: fluorine would arrive too late for life chemistry
27. ratio of exotic matter mass to ordinary matter mass
    if larger: universe would collapse before solar-type stars could form
    if smaller: no galaxies would form
28. number of effective dimensions in the early universe
    if larger: quantum mechanics, gravity, and relativity could not coexist; thus, life would be impossible
    if smaller: same result
29. number of effective dimensions in the present universe
    if smaller: electron, planet, and star orbits would become unstable if larger: same result
30. mass of the neutrino
    if smaller: galaxy clusters, galaxies, and stars would not form
    if larger: galaxy clusters and galaxies would be too dense
31. big bang ripples
    if smaller: galaxies would not form; universe would expand too rapidly
    if larger: galaxies/galaxy clusters would be too dense for life; black holes would dominate; universe would collapse before life-site could form
32. size of the relativistic dilation factor
    if smaller: certain life-essential chemical reactions will not function properly if larger: same result
33. uncertainty magnitude in the Heisenberg uncertainty principle
    if smaller: oxygen transport to body cells would be too small and certain life-essential elements would be unstable
    if larger: oxygen transport to body cells would be too great and certain life-essential elements would be unstable
34. cosmological constant
    if larger: universe would expand too quickly to form solar-type stars

Taken from  Big Bang Refined by Fire by Dr. Hugh Ross, 1998. Reasons To Believe, Pasadena, CA.

Links

Anthropic Coincidences (http://www.firstthings.com/ftissues/ft0106/articles/barr.html) by Stephen M. Barr (a theoretical particle physicist at the Bartol Research Institute of the University of Delaware)

References

1. For further information, visit the website of Dr. Edward Wright, Ph.D., Professor of Astronomy at UCLA
2. The amount of light and dark matter is only 30% of that necessary for a "flat" universe (one which contains the critical mass - the amount necessary to stop the expansion of the universe).
3. Sincell, M. 1999. Firming Up the Case for a Flat Cosmos. Science 285: 1831.

Last updated 11/09/01