What are the probabilities of Earth like orbits, and solar systems like ours?
I believe that the universe is infinite both temporally and spacially, although I cannot prove either. If the U is truly infinite, the AP is absolutely irrelevant. Post 17 in this thread sums up my disgust with this concept:wolram said:Ohwilleke
If you like i will try to rephrase the question , given that there is only so
many permutations for orbits, solar system dynamics, what is the probability
of the AP being correct
The probability of finding a planet with an Earth-like orbit depends on a variety of factors, such as the size and type of the star it orbits, the distance from the star, and the composition of the planet itself. However, recent studies have estimated that as many as 40 billion Earth-sized planets could exist in the habitable zones of Sun-like stars in our galaxy.
It is difficult to determine the exact frequency of solar systems like ours, as we have only observed a small fraction of the estimated 100 billion planets in our Milky Way galaxy. However, based on recent exoplanet discoveries, it is estimated that at least 20% of Sun-like stars have Earth-sized planets in their habitable zones, suggesting that solar systems like ours may be relatively common.
The main factors that contribute to the likelihood of a planet having an Earth-like orbit are the distance from its star, the size and type of the star, and the composition of the planet itself. A planet must be in the habitable zone of its star, where liquid water can exist on its surface, and have a stable orbit to have Earth-like conditions.
In addition to the main factors mentioned above, there are other factors that can affect a planet's likelihood of having an Earth-like orbit. These include the presence of gas giants in the system, which can help stabilize the orbits of smaller planets, and the occurrence of other celestial events, such as collisions with other planets or asteroids, which can disrupt a planet's orbit.
Scientists use various methods to search for planets with Earth-like orbits and solar systems like ours, including the transit method, which looks for dips in a star's brightness as a planet passes in front of it, and the radial velocity method, which detects the wobble of a star caused by the gravitational pull of an orbiting planet. Scientists also use telescopes, such as the Kepler Space Telescope, to search for exoplanets and analyze their characteristics to determine if they have Earth-like orbits and solar systems.