It's a binary system located about 37 light years from earth. The third planet, the Barnard Star, in the Zeta system is claimed to be the home of the Greys, the ones that are about 4.5 feet tall. It was identified and located by Betty and Barney Hill after a map drawn under regressive hypnosis. Robert Lazar also claims that the nine UFOs he saw in S-4 came from the Zeta Reticuli system.