![Yes, mysterious radio signal from space detected in 1977 – but probably caused by comet - Africa Check Yes, mysterious radio signal from space detected in 1977 – but probably caused by comet - Africa Check](http://africacheck.org/sites/default/files/2019/12/COMETDONE.png)
Yes, mysterious radio signal from space detected in 1977 – but probably caused by comet - Africa Check
![Another mysterious deep space radio burst is sending signals to Earth every 157 days, study finds - CBS News Another mysterious deep space radio burst is sending signals to Earth every 157 days, study finds - CBS News](https://assets2.cbsnewsstatic.com/hub/i/r/2020/06/09/b76e853e-53dd-4d54-b864-b7f0a3a4cadd/thumbnail/640x370/df6d72635bf38d4b90bcb546e55bd598/1920-v2-final-r1periodicity-name.jpg)
Another mysterious deep space radio burst is sending signals to Earth every 157 days, study finds - CBS News
![An approximation to determine the source of the WOW! Signal | International Journal of Astrobiology | Cambridge Core An approximation to determine the source of the WOW! Signal | International Journal of Astrobiology | Cambridge Core](https://static.cambridge.org/binary/version/id/urn:cambridge.org:id:binary:20220620193847484-0359:S1473550422000015:S1473550422000015_fig1.png?pub-status=live)
An approximation to determine the source of the WOW! Signal | International Journal of Astrobiology | Cambridge Core
![Messages to and from Outer Space | Life on Other Worlds | Articles and Essays | Finding Our Place in the Cosmos: From Galileo to Sagan and Beyond | Digital Collections | Library of Congress Messages to and from Outer Space | Life on Other Worlds | Articles and Essays | Finding Our Place in the Cosmos: From Galileo to Sagan and Beyond | Digital Collections | Library of Congress](http://www.loc.gov/static/collections/finding-our-place-in-the-cosmos-with-carl-sagan/images/signal-from-mars.jpg)