If aliens already called, why didn’t we hear?

If aliens already called, why didn’t we hear?

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, and even excess heat that might come from massive alien technology. Despite decades of effort, no confirmed signal from extraterrestrial civilizations has been found. […] The post If aliens already called, why didn’t we hear? appeared first on Kno…

Alien Signals Could Have Already Reached Us: Why Haven’t We Detected Them?

For decades, scientists have been actively searching for signs of extraterrestrial life. From radio waves to laser flashes and infrared heat signatures, the hunt for alien technosignatures has captivated both researchers and the public. However, despite the extensive efforts, no confirmed signals have been found. A recent study, published in The Astronomical Journal, asks a critical question: if alien signals have already reached Earth, why have…

If Alien Signals Reached Earth, Why Haven't We Seen Them? - Astrobiology

Since the first SETI experiment in 1960, astronomers have scanned the Milky Way for signs of advanced extraterrestrial civilizations. These searches have covered radio waves, optical flashes, and infrared heat signatures. So far, they have found nothing confirmed. That silence is often explained by saying we have only searched a tiny part of the cosmic […] The post If Alien Signals Reached Earth, Why Haven’t We Seen Them? appeared first on Astro…