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Earth is a planet is made up of a mixture of oxygen, nitrogen, carbon dioxide and several other gaseous elements that have created and sustained life as we know it. The universe is a vast space made of matter that varies from the smallest cosmic particle to a massive galaxy. Within one of billions of galaxies is home to planet earth, which is one of 7 planets in the Milky Way Galaxy, all orbiting a star. Based on what human life is conscious of, Earth is the only residence of intelligent life in the universe. Could planet Earth be the only planet able to sustain intelligent life or are there other planets with similar chemical make-up to do so? Or could it be that there are other elements unknown to humans that can create and sustain what we consider “intelligent life”? If possible, would these living beings be anything like humans or far different beyond imaginable? These are questions scientific research can only analyze and attempt to answer.
According USA Today, astronomers from the University of California-Berkeley and the University of Hawaii estimate the number of earth-lik...

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