[<font color="blue"> It encourages me to see "concrete" data to fortify things I have believed in faith so many years. Back when I accepted God's gift, the study of this stuff was still in infancy (think Newton and Einstein arguments.) IT is comforting to me to know there is a higher power in control, who has a purpose.
A recent question asked about the purpose of all the planets. I am posting just the reasoning for earth system
hopefully the rest will post later.
1: Evidence for the design of the sun-earth-moon system
The following parameters cannot exceed certain limits without disturbing the earth's capacity to support life. Some of these parameters are more narrowly confining than others. For example, the first parameter would eliminate only half the stars from candidacy for life-supporting Systems, whereas parameters five, seven, and eight would each eliminate more than ninety-nine in a hundred star-planet systems. Not only must the parameters for life support fall within a certain restrictive range, but they must remain relatively constant over time. And we know that several, such as parameters fourteen through nineteen, are subject to potentially catastrophic fluctuation. In addition to the parameters listed here, there are others, such as the eccentricity of a planet's orbit, that have an upper (or a lower) limit only.
1. number of star companions
if more than one: tidal interactions would disrupt planetary orbits
if less than one: not enough heat produced for life
2. parent star birth date
if more recent: star would not yet have reached stable burning phase
if less recent: stellar system would not yet contain enough heavy elements
3. parent star age
if older: luminosity of star would not he sufficiently stable
if younger: luminosity of star would not be sufficiently stable
4. parent star distance from center of galaxy
if greater: not enough heavy elements to make rocky planets
if less: stellar density and radiation would he too great
5. parent star mass
if greater: luminosity output from the star would not be sufficiently stable
if less: range of distances appropriate for life would be too narrow; tidal forces would disrupt the rotational period for a planet of the right distance
6. parent star color
if redder: insufficient photosynthetic response
if bluer: insufficient photosynthetic response
7. surface gravity
if stronger: planet's atmosphere would retain huge amounts of ammonia and methane
if weaker: planet's atmosphere would lose too much water
8. distance from parent star
if farther away: too cool for a stable water cycle
if closer: too warm for a stable water cycle
9. thickness of crust
if thicker: too much oxygen would he transferred from the atmosphere to the crust
if thinner: volcanic and tectonic activity would be too great
10. rotation period
if longer: diurnal temperature differences would he too great
if shorter: atmospheric wind velocities would he too great
11. gravitational interaction with a moon
if greater: tidal effects on the oceans, atmosphere, and rotational period would he too severe
if less: earth's orbital obliquity would change too much causing climatic instabilities
12. magnetic field
if stronger: electromagnetic storms would be too severe
if weaker: no protection from solar wind particles
13. axial tilt
if greater: surface temperature differences would be too great
if less: surface temperature differences would he too great
14. albedo (ratio of reflected light to total amount falling on surface)
if greater: runaway ice age would develop
if less: runaway greenhouse effect would develop
15. oxygen to nitrogen ratio in atmosphere
if larger: life functions would proceed too quickly
if smaller: life functions would proceed too slowly
16. carbon dioxide and water vapor levels in atmosphere
if greater: runaway greenhouse effect would develop
if less: insufficient greenhouse effect
17. ozone level in atmosphere
if greater: surface temperatures would become too low
if less: surface temperatures would he too high; too much uv radiation at surface
18. atmospheric electric discharge rate
if greater: too much fire destruction
if less: too little nitrogen fixing in the soil
19. seismic activity
if greater: destruction of too many life-forms
if less: nutrients on ocean floors would not be uplifted
About a dozen other parameters, such as atmospheric chemical composition, currently are being researched for their sensitivity in the support of life. However, the nineteen listed in Table 1 in themselves lead safely to the conclusion that much fewer than a trillionth of a trillionth of a percent of all stars will have a planet capable of sustaining life. Considering that the universe contains only about a trillion galaxies, each averaging a hundred billion stars,e we can see that not even one planet would be expected, by natural processes alone, to possess the necessary conditions to sustain life.f No wonder Robert Rood and James Trefil14 and others have surmised that intelligent physical life exists only on the earth. It seems abundantly clear that the earth, too, in addition to the universe, has experienced divine design