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LequteMan
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Researchers at the Australian National University (ANU) have announced that they have the answer to reasons why alien life forms on other planets are yet to contact earth.
The 50-year search for an alien life has not yielded any conclusive results probably because life on other planets was brief and has gone extinct soon after its origin owing to runaway heating or cooling on their planets, the astrobiologists say.
"The mystery of why we haven't yet found signs of aliens may have less to do with the likelihood of the origin of life or intelligence and have more to do with the rarity of the rapid emergence of biological regulation of feedback cycles on planetary surfaces," Aditya Chopra, a researcher said.
"The universe is probably filled with habitable planets, so many scientists think it should be teeming with aliens,"
"Early life is fragile so we believe it rarely evolves quickly enough to survive," he added in a paper published in the journal Astrobiology.
"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," Dr Chopra said.
The 50-year search for an alien life has not yielded any conclusive results probably because life on other planets was brief and has gone extinct soon after its origin owing to runaway heating or cooling on their planets, the astrobiologists say.
"The mystery of why we haven't yet found signs of aliens may have less to do with the likelihood of the origin of life or intelligence and have more to do with the rarity of the rapid emergence of biological regulation of feedback cycles on planetary surfaces," Aditya Chopra, a researcher said.
"The universe is probably filled with habitable planets, so many scientists think it should be teeming with aliens,"
"Early life is fragile so we believe it rarely evolves quickly enough to survive," he added in a paper published in the journal Astrobiology.
"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," Dr Chopra said.
