xtraterrestrial Life

            Alien life refers to a form of life that lives outside Earth and most likely did not begin from Earth. The aliens may differ from simple organisms to complex beings which are much civilized than humanity. Most astronomers hypothesize about the existence of intelligent life in the universe. From the mid 20^th century period, astronomers have continuously searched for any signs of existing alien life through the scrutiny of telescopes, specimen information and use of radios to send and identify communication signals. Science fiction has also attempted to communicate several scientific notions which have influenced the public perception of alien life. With all the constant speculations from the scientists and the public, there is a possibility that alien life exists in the universe.