(most of this info is from an interview with Dr. Hugh Ross, need to pick up a copy of Improbable Planet to cite all the sources)
I think I’ve spent enough time ridiculing NASA mouthpieces for their views that life, and indeed intelligent life, is abundant and discoverable within the next five years because of an equation that shows the possible existence of a planet in the area around a star that could possibly contain water. Let’s take a quick look at the requirements for life on a planet, because the notion that where there is water there is life is actually erroneous. Where there is no water there is no life, would be more accurate. However, where there is no gravity, sunlight, or an abundance of other elements there is also no life. Water is not even the most rare of factors that determines the ability of life to survive on a planet, so the NASA mission of following the water is hardly ingenius or logical.
There are 8 habitable zones besides water. For example, there is an ultraviolet habitable zone. The amount of ultraviolet light that strikes the planets surface needs to be at a specific level for life to exist to allow it to fuel cellular activity but at the same time not fry it. For the vast majority of stars, the water stable zone does not overlap the ultraviolet safe zone. Planet needs to be in all nine habitable zones to be able to support life.
Universe: Minimum of 13.8 billion years to create life in the universe. High abundance of uranium and thorium. Universe begins with none. There needs to be enough second and third generation supernovas to create these elements. We have 400x uranium and 600x thorium as any other planet, to give us plate tectonics and continents and oceans to support life.
Milky Way: Symmetrical spiral arm that will remain stable for 10 million years. 250 features of the Milky Way that are fine tuned. Unique compared to all others that we have as yet detected.
Planet: Need 3 billion years of bacterial existence to chemically transform the planet to make it safe for higher life forms. There are many elements that will kill us if there is too much and which we still require for life. We actually need very little water on our planet, roughly 0.3% of the surface. A planet that is 5% to 50% water (which is every other planet that we’ve been able to determine the amount of water that probably exists on it) is too much for life to exist.
Moon: the more we study the moon, the more evidence we find that it required more fine-tuning to exist. The moon allows us to have a stable amount of water
Our Sun: 60 year search trying to find a sun like ours. We have managed to find twins of every other star that we’ve catalogued in the observable part of our galaxy. Except for one. Ours is unique.
Every planet in our solar system plays a critical role in sustaining advanced life on our planet. For example, Jupiter/Saturn in their formation history they drifted towards the sun, stopped, then drifted back out. The Grand Tack model shaped the comet and asteroid belts. Movement of our four gas giants to give us just the right amount of delivery from comets and asteroids. All the planets, from Mercury through Uranus, play a role in allowing Earth to sustain advanced life.
Hugh Ross: Every historical event in the universe plays a critical role for billions of human beings to live on this planet for this 10,000 year window of time.
The very laws of physics need to be at the exact levels that they are at for atoms be able to combine together.