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Potential signs of life on Venus are fading as astronomers downgrade their original claims

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www.sciencemag.org

Paul VoosenThe announcement in September took the world by storm: Researchers using two radio telescopes found signs that the clouds of Venus were harboring phosphine, a toxic compound that on Earth is only made in significant quantities by microbes and chemists.

The unexpectedly high levels detected on Venus could point to a floating microbial biosphere, the researchers suggested in a paper published in Nature Astronomy.

But almost immediately, other astronomers began to criticize the results, with four independent studies pointing out questionable methods or failing to reproduce the results.Now, after reanalyzing their data, the original proponents are downgrading their claims.

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