Extraterrestrial

Has the James Webb Space Telescope found evidence of alien life ?

By T.K. Randall
January 17, 2024

Image: James Webb Space Telescope
Credit: NASA/dima_zel/NOIRLab / CC BY 4.0 (adapted) It goes without saying that the discovery of extraterrestrial life on another world would be one of the greatest scientific discoveries of all time.

With powerful space telescopes such as the James Webb being capable of directly observing the atmospheres of distant planets in far-off solar systems, we are now entering an era of astronomy in which such a discovery might not just be possible, but inevitable.

For some time now, rumors have circulated the Internet suggesting that the flagship telescope may have in fact already found an extrasolar world exhibiting all the hallmarks of life.

Astronaut Tim Peake recently raised eyebrows when he said:

"Potentially, the James Webb telescope may have already found [alien life]... it's just that they don't want to release or confirm those results until they can be entirely sure, but we found a planet that seems to be giving off strong signals of biological life."

So what planet could he be referring to ?The answer, some believe, is K2-18 b - a "hycean" exoplanet situated 120 light-years away with a mass approximately 8.6 times that of the Earth.

This intriguing world is believed to have liquid water oceans on its surface and a hydrogen-rich atmosphere, making it the most promising planet so far in the hunt for alien life.

That said, it is not currently possible to confirm that there is actually life there.

"JWST has not found definitive evidence of life on an exoplanet," James Webb deputy project scientist Knicole Colon recently told Ars Technica.

"It is anticipated that JWST observations may lead to the initial identification of potential biosignatures that could make habitability more or less likely for a given exoplanet."

"Future missions will be needed to conclusively establish the habitability of an exoplanet."

Source: Ars Technica

Tags: Alien, Exoplanet, James Webb