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We Can’t Find Any Aliens Because they are All Dead [Study]

Update Date: Jan 26, 2016 10:51 AM EST
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Humans have been hunting for extraterrestrial life for so many years now. There have been more planets found in the outer space, outside of our own solar system. The James Webb telescope will soon lend a comprehensive look at the distant world. The planet Mars has already received its robots looking for telltale signs to prove previous existence. There have been orbiters looking through the ice geysers and moons that are covered in oceans to look for the tiniest sign of a life-friendly mineral. The radio telescopes are always listening in for a sound that can prove extraterrestrial life. Despite all these efforts, there is not a single evidence that can conclusively prove that there are aliens alive somewhere. So where are all these ETs that big-budget Hollywood movies talk about?

According to a recent study published in Astrobiology, researchers belonging to the Australian National University give single explanation, there is a fair chance that the life in planets outside of earth has already lived its course. The new study also suggests that if there was life and it did evolve, it would be too weak to survive beyond its infancy. "Most early planetary environments are unstable. To produce a habitable planet, life forms need to regulate greenhouse gases such as water and carbon dioxide to keep surface temperatures stable," lead author Aditya Chopra said in a statement.

The authors of the study say that while the early microbial life helped in stabilizing the climate of our planet, any other life that may have prevailed in nearby rocky planets failed to support these life forms. "Between the early heat pulses, freezing, volatile content variation and runaway positive feedbacks, maintaining life on an initially wet, rocky planet in the habitable zone may be like trying to ride a wild bull. Most life falls off," the authors wrote in the study, as reported by Washington Post

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