Complex life on planets orbiting the galaxy's most common stars may be unlikely

In a blow to anyone dreaming that complex life may exist elsewhere in the universe, a new study suggests we're unlikely to ...
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Complex life developed nearly 1 billion years earlier than previously thought, study reveals

Complex life began to develop earlier, and over a longer span of time, than previously believed, a new study has revealed. The research sheds new light on the conditions needed for early organisms to ...