Scientists find the strongest evidence so far on a foreign planet

In the discovery of a potential teacher, scientists who use the James Web telescope for space called what they call the strongest signs so far from a possible life outside our solar system, and discovered in the atmosphere of a foreign planet with the fingerprints of chemical gases that they produce on Earth only through biological processes.

The two-gases are created dual methayl, DMS, Dimethyl Disulfide, or DMDS-participating in the WEBB notes of the planet called K2-18 B on Earth by living organisms, and the life of microbes in the first place such as sea plant plankton-algae.

The researchers said that this indicates that the planet may be filled with microbial life. However, they emphasized that they do not announce the discovery of actual living organisms, but rather a potential vital indication – an indication of a biological process – and that the results should be seen cautiously, with a need for more notes.

However, they expressed excitement. Astronomical physicist Niko Madosodhan of the Institute of Astronomy at the University of Cambridge, the main author of the study, the main author of the study, the main author of study science, the main author of study science, the main author of study science, the main author of the study, the main author of astronomy, the author of the study, the main author of astronomy, the main author of astronomy, the main author of study science, the main author of study science, the main author, To study the study, the main author of the study study, the main author of the study, this is the first hints of a foreign world that is likely to be possible to inhabit it, the author of the study, the author of the study, the main author of study science, the main author of the study study, the main author of the study study, the main author of the study study, the main author of the study science, the author of the study is that these are the first hints of a foreign scientist who may live in it. Posted in Astronomical Physical Magazine messages.

“This is a transformative moment in the search for life outside the solar system, as we have proven that it is possible to discover vital negligence in the planets that can be inhabitable with the existing facilities. We have entered the era of astronomical astronomer.”

Madhusudhan noted that there are different efforts in the search for signs of life in our solar system, including various claims of environments that may be favorable to life in places such as Mars, Venus and many ice satellites.

K2-18 B is 8.6 times larger than Earth and has a diameter of about 2.6 times like our planet.

It revolves around the “Al-Housing area”-at a distance where there can be liquid water, which is a major component for life, on the surface of a planetary-around a smaller and less bright red dwarf star, located about 124 light-years away from Earth in the Liu constellation. Optical year is the light distance per year, 9.5 trillion kilometers. Another planet has also been identified around this star.

Evidence about Exoplanet K2-18 B

About 5,800 planets have been discovered outside our solar system, called Exoplanets, since the 1990s. Scientists have assumed the presence of external planets called Hycean-covered with the liquid of the liquid of the population of microorganisms and with an atmosphere rich in hydrogen.

The previous observations made by the Webb, which were launched in 2021 and became operating in 2022, were identified, and methan dioxide and carbon dioxide in the K2-18 B atmosphere, the first time that carbon-based molecules have been discovered in the atmosphere of the outer planets in the star-suitable area.

“The only scenario that currently explains all the data obtained so far from JWST (James Web Telescope), including previous and current observations, is one of K2-18 B is the world of Hessian teeming with life.” “However, we need to be open and continue to explore other scenarios.”

Madhusudhan said that with the worlds of Hycean, if they exist, “We are talking about microbial life, and perhaps like what we see in the Earth’s oceans.” Their surroundings are supposed to be warmer than the ground. In response to a question about the potential or even smart cells, Madoosodhan said: “We will not be able to answer this question at this stage. The main assumption is a simple microbial life.”

DMS and DMDS, both of the same chemical family, have been predicted as important vitality abroad. Webb found that one or another, or perhaps both, was present in the planet’s atmosphere with a level of confidence of 99.7 percent, which means that there is still a chance of 0.3 percent of the observation as a statistical sanctuary.

Gases were discovered with concentrations in the atmosphere for more than 10 parts per million, depending on the size.

“To return to it, this is more higher than its concentrations in the Earth’s atmosphere, and it cannot be explained without biological activity on the basis of current knowledge.”

Scientists who did not participate in the study.

“The rich data from K2-18 B makes it a junior world,” said Christopher Glenn, the main scientist in the Space Science Department at the Southern West Research Institute in Texas. “This recent data is a valuable contribution to our understanding. However, we must be very careful to test the data as much as possible.

How astronomers measure the chemistry of the planet?

K2-18 B part of the “Sub -NepTune” category of planets, with greater diameter than Earth but less than Neptune, the smallest gas planet in our solar system.

To ensure the chemical composition of the atmosphere of external planets, astronomers analyze light from its host star while the planet passes in front of it from the Earth’s perspective, called the transit method. While crossing the planet, webb can discover a decrease in the star brightness, and a small part of the stars light passes through the planetary atmosphere before it was discovered by the telescope. This allows scientists to determine the gases consisting in the planet’s atmosphere.

Previous notes of Webb for this planet made a temporary hint of DMS. His new observations used a different tool and the extent of different wavelength of light.

Madosodhan said that the “Holy Capture” of the science of external planets is to find evidence of life on an Earth -like planet outside our solar system. Madosodhan said that for thousands of years, our race asked whether we are alone “in the universe – and now it may be within a few years of discovering a possible strange life in the world of Hessian.

But Madosodhan is still warning.

First, we need to repeat the notes two to three times to ensure that the sign that we see is strong and increase the importance of detection “to the level in which the possibilities of statistical astronomy are almost less than a million.

“Second, we need more theoretical and experimental studies to make sure whether there is another vital mechanism or not (does not involve biological processes) to make DMS or DMDS in a planetary atmosphere like K2-18 B.

Therefore, the results are “large if they” are about whether the notes are due to life, and it is in the interest of anyone to claim prematurely we have discovered life, “said Madosodhan.