What probability is there of finding another earth?

Answer 1

Considering the number of stars in each galaxy, and the number of galaxies that

exist in the universe, and the emerging conjecture that as many as 75% of all

stars have planets, the probability of the EXISTENCE of another planet somewhere

that is almost identical to Earth is very high.

BUT . . . considering the distances involved, and the difficulty of detailed observations

and measurements of an object that appears to us to be about the same apparent

size as a grain of sand on the surface of the moon, the probability of our FINDING

it is minuscule.