# Probability For Life On Earth

Probability Estimate  for Attaining the Necessary Characteristics for a Life Support Body

© 2004 Reasons To Believe (update)

Probability Estimate  for Attaining the Necessary Characteristics for a Life Support Body

Notes: Estimate of dependency and longevity factors are accounted for at the end of the list. References to relevant science research papers and books also follow the list. The definition used here for a planet is broad enough to include a large satellite orbiting another planet. For reasons why satellites in general and starless planets are not suitable candidates for a life-support body see Lights in the Sky and Little Green Men by Hugh Ross, Kenneth Samples, and Mark Clark (Colorado Springs, CO: NavPress, 2002), pp. 39-41.

Probability for occurrence of all 322 parameters ≈ 10-388

dependency factors estimate ≈ 10-96

longevity requirements estimate ≈ 1014

Probability for occurrence of all 322 parameters ≈ 10-304

Maximum possible number of life support bodies in universe ≈ 1022

Thus, less than 1 chance in 10282(million trillion trillion trillion trillion trillion trillion trillion trillion trillion trillion trillion trillion trillion trillion trillion trillion trillion trillion trillion trillion trillion trillion trillion) exists that even one such life-support body would occur anywhere in the universe without invoking divine miracles.

##### Endnotes
1. All the references in Fine-Tuning of Physical Life Support Body by Hugh Ross (Pasadena, CA: Reasons To Believe, 2002) apply. What follows are references that are in addition to those.
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