The newest visitor from deep space, interstellar comet 3I/ATLAS, has arrived with a literal pulse that is stirring up talk of alien engineering as much as it is exciting astronomers. As its brightness ...
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Can we detect alien artifacts?
There are tens of billions of Sun-like stars in the Milky Way, an immense tally that encourages the possibility that extraterrestrial life peppers the universe. Finding evidence for aliens - even ...
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