Too far away to reach it within reasonable times. Even if planets are relative close to each other could mean that each of them has massive tides are waves dispersing the planets surfaces. So even if they are within the habitable region must not mean that life that we know may exists there, or has it easy to survive. Then all of these stars are very close to its center star, much closer than earth is to our sun. So the redation might be very high, although the star over there is less heavy and …