Mechanical machines could then be sent to explore different stars. (Kazan 2011). The Homo sapiens species would not be able to survive the galactic journey to explore new life and new civilization. Our current genetic makeup is not suited to space travel. If we sent machines, they would design themselves and when they landed they would start collecting materials and replicating themselves to continue their mission. Mechanical machines may one day replace DNA. At some point, DNA replaced a previous life form that existed on the planet