When looking for signs of life on the planets outside our solar system, sometimes nothing is almost as good as anything. Even the lack of biosignatu on the outer planets examined can tell us a lot about the possibility of life on billions of planets we have not yet controlled, to work inside Journal of Astronomy.
The study used a sophisticated statistical analysis to determine the number of minimum external planets to be observed to produce useful answers to how many potentially lived planets. They found that finding a sign of life on the outer planet of 40 to 80 would not ignore that there is such a life. Instead, such an answer will only reduce the probability a little.
Looking for life on outer planets
It means that similar planets in the Milky Way can potentially support life from 10 percent to less than 10 percent. Outward extrapolation, 10 percent, is still equal to the planets with potentially potentials when applied to the entire universe – therefore nothing.
However, there is a capture: uncertainty. Each observation includes a certain unknown level. Is things measured correctly? Did the researchers interpret the data correctly? Was there anything that researchers ignored?
The authors argue that such questions are more than just philosophical. They can determine how many resources are separated in a particular area.
“This is not just about how many planets we observe – about asking how safe we can be in seeing or seeing the right questions and what we are looking for,” Daniel angerhausenEth Zurich is a physicist and the author of the newspaper, Press release. “If we are not careful and rely on our ability to define life, even a major questionnaire can lead to misleading consequences.”
How are these questions like international tasks Large interferometer for outer planets (life) ETH Zurich will be held. Life aims to analyze dozens of external planets that resemble mass, radius and temperature to the soil. The task will at least look for symptoms of water and oxygen, as well as other chemical components that show the potential of life.
Read more: 6 external planets that can support life outside the world in our universe
Uncertain for upcoming tasks
As a result of the statistical analysis, according to the press release, researches should change the questions they ask in future tasks.
“For example, the authors say that the fraction of rocky planets in the habitable area of a solar system shows the symptoms of net water vapor, oxygen and methane”.
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Before joining Discover Magazine, Paul Smaglik specialized in US life science policy and global scientific career problems and spent more than 20 years of science journalist. He started his career in the newspapers, but moved to scientific magazines. He has been involved in publications such as Science News, Science, Nature and Scientific American.
