corotation

Probability that feature will fall in the required range for physical life local abundance and distribution of dark matter relative abundances of different exotic mass particles decay rates of different exotic mass particles variability of local dwarf galaxy absorption rate giant star density in galaxy frequency of gamma ray bursts in galaxy star location relative to galactic center star distance from corotation circle of galaxy ratio of inner dark halo mass to stellar mass for galaxy star distance from closest spiral arm z-axis extremes of star's orbit proximity of solar nebula to a normal type I supernova eruption timing of solar nebula formation relative to a normal type I supernova eruption proximity of solar nebula to a type II supernova eruption timing of solar nebula formation relative to type II supernova eruption timing of hypernovae eruptions number of hypernovae eruptions masses of stars that become hypernovae flux of cosmic ray protons variability of cosmic ray proton flux gas dispersal rate by companion stars, shock waves, and molecular cloud expansion in the Sun's birthing star cluster number of stars in birthing cluster star formation rate in parent star vicinity during history of that star variation in star formation rate in parent star vicinity during history of that star birth date of the star-planetary system number of stars in system number and timing of close encounters by nearby stars proximity of close stellar encounters masses of close stellar encounters distance from nearest black hole absorption rate of planets and planetismals by parent star

Reasons To Believe - dcarree 2010