Why not find life on other planets? – The universal

life on other planets could be only microbial and may quickly extinguished, as astrobiologists from the Research School of Earth Sciences at the University National Australia.

In a study that aimed to understand how life could emerge, scientists realized that life on other planets would be easily extinguishable because the extreme temperatures of the nascent planets.

“The universe is probably full of habitable planets, so many scientists think that should be full of life,” says Aditya Chopra, author of the article published in the journal Astrobiology .

“The first years are difficult, so we think (the types of life) rarely evolve fast enough to survive,” he said.

“Most primitive planetary environments are unstable. To produce a habitable planet, life forms require a number of factors including gas greenhouse regulated water and carbon dioxide to keep temperatures stable surface, “explains the scientist.

some four billion years ago on Earth, Venus and Mars were habitable. However, roughly a billion years after its formation, Venus became a greenhouse and Mars is frozen in a freezer, the study found.

If there was microbial life at some time in Venus and Mars, failed to adapt to the rapidly changing environment, says Charley Lineweaver, coauthor work.

“Life on Earth probably played a major role in stabilizing the world’s climate,” he says.

“The mystery of why we have not yet found evidence extraterrestrials may have less to do with the possibility that the origin of life or intelligence and have more to do with the rarity of the rapid development of biological regulation of feedback loops on planetary surfaces “refers Chopra.

Planets dry , rocky, with ingredients and energy sources necessary for life will seem to be everywhere, however, as the physicist Enrico Fermi said in 1950, Sorry no signs of extraterrestrial life.

A plausible solution to the paradox Fermi, the researchers say, is to reduce the explanation of the lack of universal life principles, they have called the “Gaian bottleneck”.

“The base model ‘Gaian bottleneck is based on the vast majority of the fossils are in the universe will be of microbial life extinct and not of multicellular species like dinosaurs or humanoid, they need billions of years to evolve, “said the scientist.

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