Could alien signals have already reached Earth undetected? - If advanced alien civilisations exist and have contacted Earth, ...

For decades, scientists have been actively searching for signs of extraterrestrial life. Fromradio waves to laser flashes and ...

For more than 60 years, scientists have been scanning the skies for signs of intelligent life beyond Earth. Using powerful telescopes, they have searched for unusual radio signals, brief laser flashes ...

The hunt for intelligent life beyond Earth has quietly entered a more exacting phase, and one small, cool star has become a proving ground for how serious that search can be. TRAPPIST-1, a dim red ...