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The Search For Extraterrestrial Life Essay

1894 words - 8 pages

     Abstract: Scientists claim that other life forms do in fact exist based on probability. The conditions necessary for life are likely to be present on various other planets. Signs of possible life have been found in material from outer space. Much research has been dedicated to proving the existence of life on Mars. SETI is a program entirely dedicated to finding and establishing communication with extra terrestrials. If other life forms are found, communication with these beings will be a difficult task. Laws to protect humans from the dangers of extraterrestrial beings are already in effect. Although contact with alien beings has not yet been made, technology today may make it a reality in the near future.


Throughout time we have pondered the possibility of life existing beyond earth. Movies, television programs, and novels have been written about extraterrestrial beings. Often these beings bear strong resemblances to human beings, with slight alterations. When imagining what exactly an alien would look like, we are biased to believe that extraterrestrial beings are little green men with antenna's protruding from their head and they fly around the universe in huge spaceships. However, these little green men are figments of our imagination, as true life it has yet to be proven that life does, in fact, exist elsewhere in the universe. Scientists have tried for many years to find extraterrestrial life, unsuccessfully. Yet their work has not been completely in vain. There is evidence that life can and possibly does exist on other planets. Our job is to find direct proof of this hypothesis and to attempt to establish communication with these foreign beings.


Scientists are able to make an educated guess that extraterrestrial life does exist based on the creation of life on Earth. The way that the universe has been constructed leads us to believe that multiple life bearing planets are bound to arise. Among the billions of stars in each galaxy, many have planets that revolve around them. At least a few are bound to be of the right size and have the correct spatial orientation with respect to their star to allow life to grow. We believe this because life exists on the Earth. Astronomers have concluded that there must be hundreds of billions of other stars with conditions approximating those of the sun. Therefore there could be a million earth like planets with advanced civilizations in the Milky Way galaxy alone (Stilley). It is very probable that there is intelligent life elsewhere in the universe.



Most astronomers and scientists seem firmly convinced of this fact. Although there is not any direct (or even indirect) evidence to support these claims that other sentient life is sharing the universe with us. However, this lack of evidence showing that extraterrestrial life forms exist is not proof that they do not exist. It just does not seem logical that our planet is the only place where life and...

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