I agree. However, considering that Kepler is not actually sensitive enough to detect Earth sized planets in the habitable zone of sun-like stars, both these numbers are extrapolations and it must be assumed that the 7-15% or 20% are well within each other’s error bounds.
I agree. However, considering that Kepler is not actually sensitive enough to detect Earth sized planets in the habitable zone of sun-like stars, both these numbers are extrapolations and it must be assumed that the 7-15% or 20% are well within each other’s error bounds.