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From the Paper:"Scientists have found a planet called, "Kepler-186f" that is only 10% larger than Earth. According to NASA, it's so similar to earth that it may have liquid water and life. This planet is the fifth and last planet in its solar system and in the Habitable Zone, the distance between a planet and its star where liquid water can exist and humans can survive. They are currently searching for the presence of oxygen. The reasons why scientists are looking for planets humans can inhabit is because Stephen Hawking has a theory that in one thousand years, humans will completely destroy the earth, the reason we look so far is because none of the other planets are habitable and scientists have special units of measure to tell which planets found are habitable.
"According to Jesus Diaz, "our galaxy alone contains a minimum of 100 billion planets." So far, the only one known to support life is Earth. In the search for a second planet humans could call home, it would make sense to start the search in this solar system, but unfortunately, none of the other planets here are habitable. According to Dr. Martin Dominik, "So far, we have detected only a tiny fraction of planets out there. We expect hundreds of billions exist in the Milky Way alone." With all these planets in the Milky Way, there is an endless possibility of finding another planet similar to Earth.
"According to The Cambridge guide to the Solar System - Second Edition, by Kenneth R. Lang, Mercury has a surface temperature of 740 kelvin (872 degrees Fahrenheit) during the day, and yet, the first planet from the sunis only 90 Kelvin (-298 F) at night. (Lang.) This planet can't be considered as a second earth for several reasons. The first problem is that its atmosphere is so thin, it's even difficult to detect with satellites. The second problem is the fact that it rotates too slowly. Due to this, one side faces the sun for so long, its surface is heated to a temperature hot enough to melt led, but at night, it cools down to a temperature more than three times as cold as Antarctica, whose mean temperature is -14 to -94 F, according to Ask.com. In order for humans to survive on Mercury, they'd have to survive temperatures Earth has never experienced. Because of this, it can never be considered a potentially habitable planet."
Cite this Research Paper:
Habitable Planets (2014, July 15) Retrieved September 23, 2019, from https://www.academon.com/research-paper/habitable-planets-153949/
"Habitable Planets" 15 July 2014. Web. 23 September. 2019. <https://www.academon.com/research-paper/habitable-planets-153949/>