3 March 2014
Aliens do not exist. Or do they? This is the question many people have asked themselves. We live in a world in which all is possible. There are many different theories, governmental and public, regarding the existence of aliens. Since the beginning of time there have been unsolved mysteries and unexplainable wonders. An example of this is the pyramids. During the time of the pyramids, they did not have the technology to make those giant structures. Some people think that it was built by aliens because of the amount of technology the people lacked back then. There are a lot of eminent people who insist that aliens are real and support their information with a lot of convincing examples, but still there is no seen or proven evidence. So, we come back to the same question, do aliens exist?
Alien life has been hypothesized to exist in the solar system and throughout the universe. There are many scientists that have explanations and or theories on this hypothesis including Stephen Hawking and Carl Sagan. These scientists claim, “it would be improbable for life not to exist somewhere other than Earth.” Life may have emerged independently at many places throughout the universe. Complex organic molecules necessary for life may have formed in the protoplanetary disk of dust grains surrounding the Sun before the formation of the Earth based on computer model studies. According to these studies, this same process may also occur around other stars that acquire planets.
Since the 1950s, scientists have promoted the idea that "habitable zones" are the most likely places for life to be found. On November 4, 2013, astronomers reported that there could be as many as 40 billion Earth-sized planets orbiting in the habitable zones of Sun-like stars and red dwarfs in the Milky Way, 11 billion of them may be orbiting Sun-like stars. Scientists say that he nearest planet like this may be about 12...