The survival of mankind and human speciation in a complex astrobiological context

The migration of Homo sapiens in the outer space brings one of the most significanenvironmental transformations in the history of a species. The astronomic isolation barrier is certainlystronger than the known geographic isolation. The future human colonies will split into new races,subspecies and finally new species. The survival of human civilization depends in a large extent onspread of these colonies outside our solar system and outside Milky Way.