Why Aliens Do Not Exist

Why Aliens Do Not Exist There are several different meanings to the word “alien.” An alien could be a resident born or belonging to a different country, a foreigner, a person who has been excluded from something, or a creature from outer space (extraterrestrial). For this argument, a creature from outer space would be the appropriate definition. Many believe extraterrestrials do exist. Many even claim to have seen aircrafts belonging to these extraterrestrials. There have been thousands of “sightings” of unidentified flying objects in which many believe do not look like or belong to anything Earthly. A lot of these sightings have not and can not be explained. Major governments around the globe will not come out and tell the public what they know or if they know anything about these UFO sightings. All of these things have heated up the long debate on whether or not aliens exist, but the debate need not go on any longer because aliens do not exist for three main reasons; interplanetary travel faster than the speed of light is just simply not possible, the closest planets that may possibly contain life are many light years away, and if aliens were really here on Earth, we would have seen them in person by now. A habitable planet is one capable of supporting life. For a planet to be considered habitable, life on it would have to be carbon-based and would have to use liquid water (Lissauer C11). Here on Earth, carbon cycles between the atmosphere, the oceans, living organisms, fossil fuels, and carbonate rocks. Scientists have been searching for Earth-like planets for a long time. According to an article called Are We Alone by Gregg Easterbrook, Frank Drake held a conference of physicists and astronomers in the year 1960. There he proposed his mathematical equation for predicting whether aliens exist. The result based on the equation was that there are about a million extraterrestrial civilizations scattered across our galaxy. Many of the scientists

Cited: Beck, Julie. "Scientists Determine Photons Can Travel No Faster Than The Speed of Light." Popular Science. Bonnier, 25 July 2011. Web. 15 Oct. 2011. Easterbrook, Gregg. "Are We Alone?." The Atlantic Online. Edgecast, Aug. 1988. Web. 17 Oct. 2011. Lissauer, Jack J. "How common are habitable planets?." Nature 402.6761 (1999): C11. Academic Search Premier. EBSCO. Web. 16 Oct. 2011. Roel, Ruben. "The Closest Habitable Planet - A Real Life Tatooine?." Tek-Bull. Tek-Bull, 22 July 2011. Web. 16 Oct. 2011. "Six Reasons Why Aliens Don 't Exist." Writing.Com. Instant Publisher, 2007. Web. 16 Oct. 2011.