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A team from Cambridge studying the distant planet K2-18b, 124 lightyears from Earth, have detected chemicals in its atmosphere which, on Earth, are only produced by living organisms.

While the team stress that further study is needed and that this isn't conclusive proof, it is the strongest evidence yet found for the existence of life beyond our own planet.

https://www.bbc.com/news/articles/c39jj9vkr34o