life signs on k2‑18b: could alien life exist nearby?
Astronomers have discovered potential signs of life on the planet K2-18b, which is situated 124 light-years from Earth. Observations suggest that the atmosphere of this remote planet is abundant in sulphur compounds, typically produced in biological processes.
For years, we have gazed at the sky with curiosity, wondering if we are alone in the universe. Recently, astronomers announced the detection of potential signs of life on the planet K2-18b. Research conducted using the James Webb Telescope has revealed the presence of compounds that might indicate the existence of potential extraterrestrial life.
K2-18b is located in a habitable zone
According to the Science Alert portal, K2-18b is an exoplanet situated in the so-called habitable zone, implying that it could have liquid water. It is eight times more massive than Earth and 2.5 times larger. Scientists have detected methane and carbon dioxide in its atmosphere, along with weak signals of dimethyl sulphide (DMS). On our planet, compounds like dimethyl sulphide (DMS) and dimethyldisulphide are produced exclusively by living organisms. The primary producers of these compounds are microscopic marine algae, known as phytoplankton.
Although the discovery has generated excitement, some scientists remain cautious. It is possible that this distant planet is too hot to support life. Experts point out that such substances can also form without the involvement of life forms.
Potential significance of the discovery
Nikku Madhusudhan from the University of Cambridge, the lead author of the study, emphasises that although the results are promising, further observations are essential. If confirmed, this could mark a breakthrough in the search for life beyond Earth.
The future of exoplanet research
Even if K2-18b does not turn out to be a haven for life, the James Webb telescope and the latest technologies may advance the discovery of life beyond Earth.
Scientists assert that potential extraterrestrial life will not resemble intelligent life forms but might instead be akin to the microorganisms that inhabited Earth's oceans billions of years ago.
