Could far-off aliens be sending out signals telling us they exist? If so, how would we know where to look? Researchers focusing on the search for extraterrestrial intelligence, or SETI,… Read More
Could extraterrestrial civilizations leave their fingerprints as chlorofluorocarbons in planetary atmospheres, or the waste heat generated by industrial processes, or artificial bursts of neutrinos or gravitational waves? That’s what a… Read More
‘Oumuamua is long gone from the inner solar system, but the mystery surrounding the interstellar interloper has been rekindled, thanks to a research paper written by two Harvard astronomers. The… Read More
It’s been a quarter-century since Congress cut off NASA funding for the search for extraterrestrial intelligence, or SETI, but now the space agency is revisiting the topic under another name:… Read More