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In 1977, we received a signal from outer space, which lasted 72 seconds. We still do not know how or whence it came.

Did we receive such a signal in 1977?


1 Answer 1


Yes, there was a famous narrowband signal detected in 1977, which became known as the "Wow! signal". Whether it came from outer space is unknown.

  • The original astronomer wrote a 30th Anniversary Report on the signal in 2007, which covers a lot of the technical details.
  • Wikipedia adequately covers the topic.
  • Brian Dunning of the Skeptoid Podcast examined the evidence in 2012 to give a readable summary. In short, while its origins are unknown, and several conjectures have been rejected, there is no evidence that it came from aliens.
  • 3
    this wasn't the incident with the microwave? lol
    – Himarm
    May 14, 2015 at 13:16
  • 11
    @Himarm: Nah, the microwave oven incident was more recent (past 17 years in Australia), but it illustrates the problem of jumping to conclusions about unknown signals.
    – Oddthinking
    May 14, 2015 at 13:57
  • 2
    But if it did come from aliens, then they definitely look like blue frogs, right? May 15, 2015 at 10:43

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