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An artist's concept shows what exoplanet K2-18 b could look like based on science data. The illustration was released on September 11, 2023. —Reuters
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By discovering the chemical fingerprints of gases, which is manufactured only by biological processes on Earth, in the atmosphere of the alien planet, scientists have found what they describe as the strongest indicator of potential extra -life.
Scientists detected fingerprints of gas using the James Webspace telescope. He found two gases, dementiael sulfide (DMS) and Damthail Desalfide (DMDS) on the planet K2-18B. These gases are manufactured by living things on earth, mostly microbial life such as marine phytoplanicton, or algae.
Researchers said it shows that the planet is mixing with microbial life. However, he emphasized that he was not announcing the discovery of real organisms, but rather a potential bio -sicker – an indicator of a biological process – and that these results should be careful with the need for more observations.
However, he expressed enthusiasm. These are the first indicators in the world that are potentially settled, said Nikko Madhosodhan, a astronomer at the University of Cambridge Institute of astronomy, said the main author of the research published in astronomer journal Letters.
“This system is a moment of a change in the search for life beyond the solar system, where we have shown that it is possible to detect biochemkeepers in potentially living planets with existing facilities. We have entered the era of observer astronomy.”
Madhusudan noted that various efforts are being made to find life signs in our solar system, including various environment claims that can be conducive to life in places like Mars, Venice and various icy moons.
K2-18B is 8.6 times more than Earth and its diameter is 2.6 times higher than our planet.
It turns around in the “housing zone”-a distance where liquid water, a key component for life, can be present on the surface of a planet-a red dwarf star is smaller and smaller than our sun, which is about 124 light years from the Earth in the bridgetation. A light year distance travels in one year, 5.9 trillion miles (9.5 trillion kilometers). Another planet has also been identified as the rotation of this star.
Microbial life
About 5,800 planets, called the Ecoplanets, beyond our solar system, has been discovered in the 1990s. Scientists have speculated the existence of expatriates called Hyssen Worlds-in which the liquid is covered by a sea of water that are through microorganisms and with hydrogen-rich environments.
Earlier, the web observations, which were launched in 2021 and became operational in 2022, identified methane and carbon dioxide in the K2-18B environment, for the first time when the carbon-based molecules were discovered in the atmosphere of the explanatic zone.
Madhusodhan said, “The only scenario that describes all the data received so far from the JWST (James WebSpace Telescope), including past and present observations, is where K2-18B is a Hyesical World with life.” “However, we need to remain open and search for other scenario.”
Madhusodhan said that with the Hyesen worlds, if they exist, “we are talking about microbial life, possibly what we see in the oceans of the earth.” Their oceans are estimated to be hotter than the earth. When asked about potential multi -faceted biology or even intelligent life, Madhushadhan said, “We will not be able to answer this question at this stage. The basic assumption is simple microbial life.”
The DMS and DMDS belonging to the same chemical family have been predicted as an important explanatic biochechurch. The web found that 99.7 % of the planet’s environment were present at the level of confidence in the planet environment, meaning that the data of this observation is still 0.3 % likely.
Gases were addressed to the environment of more than one million parts, according to the environment.
“For reference, it is thousands of times higher than their concentration in the land environment, and it cannot be explained without biological activity based on current knowledge,” said Madhusodhan.
Scientists are not involved in this study.
“The full data of K2-18B makes it a contradictory world,” said Christopher Glenn, a principal scientist at the Southwest Research Institute’s Space Science Division in Texas.
“These latest data are a valuable contribution to our understanding. Still, we must be very careful about examining the data as much as possible. I’m looking forward to seeing additional, free work on the data analysis starting next week.”
More studies are required
The K2-18B is a part of the “sub-nptoon” class of the planets, which is more than Earth, but our system is less than the smallest gas of the planet Nephoon.
To detect the chemical composition of a expatrical environment, astronomers analyze the light from their host stars as the planet passes through the Earth’s point of view, called the transit method. As the planet transfers, web wire can be ascertained, and before detecting a telescope, a small part of the star light goes through the planet’s environment. This allows scientists to determine the component of the planet’s environment.
The previous observations of this web planet provided a temporary gesture of DMS. Its new observations used a different device and different wavelengths of light.
Madhosodhan said that the “Holi Grill” of acuplanate science is to find evidence of life on the planet, beyond our solar system. “For thousands of years, our species has been surprised for thousands of years,” Are we alone, “and now the Hyssen can now be able to detect a potential alien life in the world.
But Madhusodhan still emphasized caution.
“First, we have to repeat the signal we are seeing two to three times and to increase the importance of detection,” said Madhosodhan.
“Second, we need more theoretical and experimental studies to ensure whether to make DMS or DMD in the planet environment like K2-18B for another abdominal mechanism (not included in a biological process). Although previous studies need them to be stronger, we need a strong bio-bio-bio-bio-bio-bio-bio-bio-bio-bio. Is “
Therefore, these results are represented “a big” whether observations are due to life, and “in the interest of someone prematurely, it is not in anyone’s interest to claim that we have detected life.”
