In a surprising new theory brought forth in a scientific study, a physicist has claimed that there was life and civilization on Mars once upon a time, which was destroyed by a massive nuclear attack by aliens br Ancient life in Mars as eradicated by aliens who attacked the planet with nuclear bombs, claims Dr, John Brandenburg in a paper.ISRO br The so called ancient life on Mars was eradicated by the aliens, who were equipped with nuclear weapons, Dr. John Brandenburg, a plasma physicist and an expert in propulsion technologies, claimed. He further warned that an attack of similar nature and impact could also happen on Earth.