Japanese Scientists Plan SETI Observations of Legendary 'Wow! Signal' Zone
Group of astronomers to conduct observations in August 2027 at Misato Observatory, marking 50 years since the 1977 detection
Quick Look
- A Japanese research group led by Shinya Narusawa of the University of Hyogo plans to conduct SETI observations in August 2027 toward the Sagittarius constellation, where the famous 'Wow!
- Signal' was detected in 1977.
- The group of about 10 astronomers and researchers will use the Misato Observatory in Wakayama prefecture to mark the 50th anniversary of the strongest candidate for an alien radio transmission ever detected.
AI-generated summary
Why It Matters
The Wow! Signal was detected by Ohio State University's Big Ear radio telescope on August 15, 1977. It was a strong narrowband radio signal lasting about 72 seconds, originating from near the Sagittarius constellation. Despite extensive studies, the signal has never been detected again, making it the strongest candidate for an alien transmission but remaining an unexplained mystery.
“They must exist somewhere in the universe. I'm excited to be putting this into action,” said Shinya Narusawa, an astrophysical expert at the University of Hyogo and head of the Japanese Society for SETI – the search for extraterrestrial intelligence. Narusawa, a 61-year-old leading expert in the SETI field, was behind the initiative, bringing together some 10 people such as astronomers and observatory researchers to form the group. It is planning to conduct observations in August next year in the direction of the Sagittarius constellation at the Misato Observatory in Wakayama prefecture, western Japan, to mark 50 years since a strong radio signal believed to have come from space was detected by an Ohio State University telescope in the United States in 1977. Dubbed the “Wow! Signal”, it originated from near the Sagittarius constellation and is known as the strongest candidate for an alien radio transmission ever detected. The signal continues to be studied in the US as a potential sign of extraterrestrial intelligence, but it remains a mystery. “We will call on the world to conduct concentrated observations towards the source of the radio wave,” the group launched in April said on its website.
Open Questions
- Was the Wow! Signal actually from extraterrestrial intelligence?
- Will the 2027 observations detect any repeat signal?
- What is the natural explanation if it's not alien?


