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What are the chances of aliens sniffing us out?

"Beaming signals into space to find ET could potentially be risky for Earth and its inhabitants. So researchers are developing a Richter-like scale to assess the chance that extraterrestrials could detect – and potentially react...

Category: Space


Viking landers may have missed Martian life

"NASA’s twin Viking spacecraft may have missed signs of life during their examination of the Martian surface 30 years ago. Researchers now say that the landers’ experiments were not sensitive enough to find life and in any case...

Category: Space

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