The largest radio telescope ever to be constructed will struggle to listen in on extra-terrestrial civilizations like our own, according to two astronomers in the UK. Their calculations suggest that when the Square Kilometre Array (SKA) starts work in 2022 it will find it difficult to tune into radio signals from alien civilizations with Earth-like technology. The finding, they say, is further evidence that scientists must take a multidisciplinary approach to the hunt for intelligent life that doesn't just rely on detecting radio signals.
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