Written by
Hanneke Weitering
Date posted
When searching for E.T., scientists tend to look for signs of life with certain similarities to life on Earth. But abiding by that narrow definition of life could be the reason we still haven't found any aliens. Are we truly alone in the universe, or do we simply have no idea what we're looking for?
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News media type
Source
Space.com
Link to source article, podcast, etc.