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Earth is a planet is made up of a mixture of oxygen, nitrogen, carbon dioxide and several other

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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 …show more content…

A massive explosion occurred which lead to a growth and expansion. During this expansion gases were released which then formed galaxies, stars, planets, rock bodies, etc. This occurrence is referred to as the big bang theory. Based on Nature, the international weekly journal of science, Aliens might have existed during the Universe’s infancy years. Calculations infer that liquid water could have formed on rocky planets just 15 million years after the Big Bang. An astrophysicist at Harvard University in Cambridge, Massachusetts, Abraham Loeb, recognized that during the times of the early Universe, energy required to keep water liquid could have come from the afterglow of the Big Bang, instead of from host stars. The temperature of this radiation is now 2.7 kelvin. Based on Loeb’s calculations on arXiv preprint server this month, during the time of the beginning of the universe around 15 million years ago, the temperature would have been 300 kelvin.
Loeb infers that rocky planets could have existed in parts of the Universe where there is dense matter which leads to the formation and development of large short-lived stars. Stars would then have enriched these areas with denser elements needed to create planets. It is said there was a habitable age of 2 million or 3 million years where all rocky planets were able to uphold liquid water, regardless distance from a star. The Universe was at a

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