It was 40 years ago that two Japanese astronomers, Masaki Morimoto and Hisashi Hirabayashi, sent a radio signal towards a star called Altair, 16.7 light years away. Using a Stanford University ...
Humanity's ideas about aliens have been evolving for millennia – but in the era before television, they were considerably stranger. In October 1961, Betty and Barney Hill sat down with an astronomy ...
Alien life could take many different forms, but one possibility is captivating scientists: alien "plants". What would they look like? And how could we find them? On the Orion arm of the Milky Way ...
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