Since certain time one can observe in recent astronomy great progress in searching exoplanets in the near universe. However still there are many question about conditions on surfaces of exoplanets which may support human life requirements. We don't know much about atmosphere composition of planets in habitable zone, we only can predict with a faint accuracy the existing conditions by knowing star category and the distance from the star and the planet. However for abundant life bloom, that can starts on a planet there should simultaneously happen many necessary conditions and planetary events what may makes to think most of the people that the life case is something rare in universe. Fermi paradox here is a confirmation of this problem. Program SETI is trying to find intelligent life on planets in universe. SETI - Search for ExtraTerrestial Intelligence.