Microbes
Research on extraterrestrial life is trying to find possible life forms in other planets. The article 'Scientists Study Earthly Microbes for Clues about Extraterrestrial Life' informs us how heat-loving microbes which are present in deep-sea volcanic vents bring about new hypotheses, about how life would have started on Earth and thereby allowing certain researchers to be more hopeful that life would prevail in other parts of the galaxy as well.
We all know earth supports life forms as we are all living in it. Earth is one of the planets of the star Sun. However, we do not know whether other planets of Sun also support life forms. These other planets of sun and planets of other stars constitute the extraterrestrial. These research groups conduct experiments in extreme conditions of hot, cold, and acidic environments in laboratories and check any species survives in these conditions. Few evidences suggest that microbes survive in extreme conditions as given in following examples: In 1960s, in Yellowstone National Park, one type of bacterium was found to survive in a hot spring at a temperature more than 170 degrees Fahrenheit. (Scientists Study Earthly Microbes for Clues about Extraterrestrial Life)
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