The simple and reliable test could revolutionise the search for life on other worlds, researchers say.
Scientists have developed a way of identifying life on other planets.
Lead researcher Professor Robert Hazen, of the Carnegie Institution’s Geophysical Laboratory and George Mason University in the US, said: “This is a significant advance in our abilities to recognise biochemical signs of life on other worlds.Dr Hazen added: “This routine analytical method has the potential to revolutionise the search for extra-terrestrial life and deepen our understanding of both the origin and chemistry of the earliest life on Earth.
Lead author Jim Cleaves of the Earth and Planets Laboratory, Carnegie Institution for Science in Washington, DC, said: “We’ll need to tweak our method to match SAM’s protocols, but it’s possible that we already have data in hand to determine if there are molecules on Mars from an organic Martian biosphere.
Instead, the researchers demonstrated that AI can differentiate between living and non-living samples, by detecting subtle differences within a sample’s molecular patterns. Using a suite of machine-learning methods, the researchers created a model that can predict the abiotic or biotic nature of the sample with around 90% accuracy.
“And, if we do find signs of life elsewhere, we can tell if life on Earth and other planets derived from a common or different origin.”
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