The Wow Signal: A Message From Space Nobody Can Explain

Hinzugefügt: 2026-05-30

[00:00:00]On August 15th, 1977, a radio telescope in Ohio picked up a signal so strong, so precise, so impossibly structured that the astronomer circled it in red pen and wrote one word, "Wow."

[00:00:15]The signal lasted exactly [music] 72 seconds.

[00:00:19]It came from the direction of Sagittarius.

[00:00:22]It matched every prediction scientists had ever made for what an alien transmission would look like.

[00:00:29]It was never heard again.

[00:00:31]The frequency was 1,420 MHz, the universal hydrogen frequency.

[00:00:38]Every intelligent civilization in the cosmos [music] would know to transmit here.

[00:00:43]It's the one channel the universe itself broadcasts on.

[00:00:47]The signal was 30 times stronger than background noise.

[00:00:52]No satellite, no aircraft, no natural source [music] could explain it.

[00:00:57]49 years of searching, billions spent, the most powerful radio telescopes on Earth pointing at the same patch of sky, silence.

[00:01:09]What was [music] it?

[00:01:11]A dying star?

[00:01:13]A natural phenomenon we don't understand? [music] Or something that spotted us first, broadcast once, >> [music] >> and decided we weren't worth contacting again?

[00:01:24]The Wow signal remains the only candidate [music] for alien contact in human history.

[00:01:29]And nobody knows what it was.