Lt.Stoned schrieb:bei der menge an planeten is glaub ich die wahrscheinlichkeit keinen
zu finden der bewohnbar ist verschwindend gering.
Carl Sagans schrieb:- .0001% of stars in the universe have a planets around them
- .0001% of those planets are large enough to have gravity but not too large to collapse into a star
- .0001% of those planets are at correct distance from star to support elements necessary for life
- .0001% of those planets have also have have existed long enough for life to evolve
after all these reductions the number of planets that could support life is in the billions.