NASA's James Webb Telescope discovers potentialy habitable world over 8 times bigger than Earth

In a groundbreaking discovery, astronomers using NASA's James Webb Space Telescope have identified an Earth-like exoplanet located millions of light years away with conditions potentially suitable for supporting life. The planet is said to be 8 times bigger than Earth.

The discovery centers around the presence of the molecule "Dimethyl Sulphide" (DMS), which is typically associated with environments conducive to sustaining life similar to Earth. However, it's important to note that this discovery is based on initial observations, and further data is required to validate these findings. Preliminary estimates place this planet, designated "K2-18b," approximately 120 light years from Earth.

Methane and carbon dioxide, both greenhouse gases vital for supporting life, have been identified in the planet's atmosphere. This finding also suggests the presence of water on K2-18b. As per NASA, K2-18 b could be a Hycean exoplanet, one which has the potential to possess a hydrogen-rich atmosphere and a water ocean-covered surface.


"K2-18 b orbits the cool dwarf star K2-18 in the habitable zone and lies 120 light-years from Earth in the constellation Leo. Exoplanets such as K2-18 b, which have sizes between those of Earth and Neptune, are unlike anything in our solar system. This lack of equivalent nearby planets means that these ‘sub-Neptunes’ are poorly understood, and the nature of their atmospheres is a matter of active debate among astronomers," NASA said.

According to the US space agency, the "abundance of methane and carbon dioxide, and shortage of ammonia, support the hypothesis that there may be a water ocean underneath a hydrogen-rich atmosphere in K2-18 b".

https://www.instagram.com/p/CxDeiHEtQ-R/?img_index=1
Professor Nikku Madhusudhan from the University of Cambridge, who led the research team, expressed astonishment at the findings. He emphasized that DMS is typically produced by phytoplankton in marine environments and noted the provisional nature of these results, with more data expected in the coming year.

Dr. Robert Massey of the Royal Astronomical Society expressed excitement about the findings and optimism about the eventual discovery of signs of extraterrestrial life in the coming decades.

The James Webb Space Telescope (JWST) is uniquely equipped to analyze light passing through the atmospheres of distant planets. By studying the resulting spectrum of light, scientists can infer the presence of various molecules in the planet's atmosphere. Absence of spectral lines indicates absorption by chemicals, allowing the identification of substances like DMS and other life-supporting compounds.

K2-18b, nearly nine times the size of Earth, meets criteria necessary to support life, including temperature, the presence of carbon, and liquid water. Confirmation of DMS would solidify the belief that the planet can sustain life both presently and in the future.

This discovery highlights the remarkable capabilities of the JWST, considering the planet's great distance, which results in minimal light reaching the telescop