As astronomers find ever more powerful ways to look for life elsewhere in the universe, one leading researchers has warned we should be careful what we wish for.
Lucianne Walkowicz, an astrophysicist at the Adler Planetarium in Chicago, told NBC News that in fact, making contact could be catastrophic for the human race.
'There's a possibility that if we actively message, with the intention of getting the attention of an intelligent civilization, that the civilization we contact would not necessarily have our best interests in mind,' she said.
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