James Webb Space Telescope could detect life on Earth from across the galaxy, new study suggests

Sep 16, 2023
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Researchers have shown that if the James Webb Space Telescope was pointed at Earth from a distant star, it could detect the signatures of intelligent life in our planet's atmosphere.

James Webb Space Telescope could detect life on Earth from across the galaxy, new study suggests : Read more

The James Webb Space Telescope (JWST) can help us find signs of life on faraway planets. A study said it could even see life signs if it looked at Earth from a distance. But understanding these signs on other planets is hard because we don't know much about those places. Even though JWST is amazing, finding aliens is still pretty complicated.
Why did Space.com not post an article on the following:?

"K2-18 b
This week, NASA announced that the James Webb Space Telescope (JWST) captured the atmospheric spectrum of planet K2-18 b with excellent precision. K2-18 b is a “sub-Neptune” planet — that is, a world with a mass about 8.9 times that of Earth but below that of Neptune, orbiting the cool dwarf star K2-18 (hence the planet’s name) located 120 light-years from Earth in the constellation Leo. Since our Solar System doesn’t have any sub-Neptune planets, this kind of world is poorly understood, even if it is the type most often found in exoplanet searches. Excitingly, K2-18 b orbits within its star’s habitable zone, implying that if there is water on its surface, it could be liquid. And the first guideline when looking for life in other worlds is “follow the water.”

"The measured spectrum is good enough for scientists to identify chemical compounds that indicate active chemistry and, if the initial hints are confirmed, even the possibility of some biological activity. The main compounds that stand out in the spectrum are methane, carbon dioxide, and — the most interesting one — dimethyl sulfide, a compound that (at least on Earth) is only produced by life."

Do an Internet search on "Webb dimethyl sulfide".