"So far", "it seems", "possible". (sigh). Don't you just love the hard and fast concreteness of science. Oops. I mean, "science".
Planets have been detected around other stars. Whether every other star has a rocky ball orbiting it in the life-comfort zone is conjectural, but it's not an illogical conjecture.
It is far more logical than the "science" offered up by the "Jesus rode a dinosaur" types.