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 ...

A search for colossal feats of alien engineering called ‘Dyson spheres‘ has so far found no convincing candidates within 1000 light years of Earth. But some say the prospects for finding the ...

Every few years, a new “mystery metal” surfaces and the internet races to declare it proof that we are not alone. Shiny shards, polished spheres, and desert monoliths are quickly framed as alien ...