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What is the Fermi paradox - and is there a real answer?
6 billion years old and home to more than 100 billion stars. This reality suggests there is likely a mind-boggling number of ...
Scientists confirm meteorites contain all five DNA bases, indicating life's building blocks may have formed in space. Discover what this means for the origins of life.
Former U.S. President Barack Obama has clarified comments he made about alien life on a podcast over the weekend.
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