Some scientists have not ruled out the Panspermia (seed) hypothesis that bacteria distributed by space dust, asteroids or meteors arrived on earth and sparked life.
Boffins were recently stunned to find two ancient meteorites which crash landed 20 years ago contained the basic building blocks for life.
Many experts have theorised that life spreads like an “interstellar infection” and expect clusters of planets in the galaxy to have alien lifeforms.
Dr Ellis Silver, who has studied evolution, has an outlandish belief on the human race’s origins.
n his book, Humans are not from Earth, which has been debated online recently, he claims that we were brought here tens of thousands of years ago by aliens.
His reasoning is humans appear so unable to cope with life on Earth.
“Mankind is supposedly the most highly developed species on the planet, yet is surprisingly unsuited and ill-equipped for Earth's environment: harmed by sunlight, a strong dislike for naturally occurring foods, ridiculously high rates of chronic disease, and more” he said.