Strange Signals
Wow! Signal
A strong narrowband radio signal detected by Ohio State University's Big Ear radio telescope in 1977 and never confirmed again. Source set meets the current publication gate; interpretation remains provisional pending stronger primary-source review.
Case identity
11 sources / 11 evidence items / updated Jun 12, 2026Date
Aug 15, 1977
Location
Sagittarius region, radio observation
Category
Strange Signals
Status
Well-Documented Mystery
30-Second Summary
What happened?
A strong narrowband radio signal detected by Ohio State University's Big Ear radio telescope in 1977 and never confirmed again.
Why is it famous?
Source set meets the current publication gate; interpretation remains provisional pending stronger primary-source review.
Current consensus?
The signal was genuinely recorded and remains scientifically interesting, but no repeat or independent confirmation supports a strong alien-technology claim.
84Signal
Overall investigation significance score.
96Reality
How strongly evidence supports that the event occurred.
44Debunk
How strongly conventional explanations explain the event.
62Residue
How much unexplained material remains.
Signal basis: score reflects source count, evidence count, freshness, and search interest. Individual evidence and explanation strength is shown inside the workspace so the top score has visible provenance.
Your read
Source Reading Desk
Read the case through the reporting, not just the summary
Sources are arranged for inspection: publisher, date, original excerpts, and Atlas interpretation are separated so readers can judge the material before accepting the assessment.
#1 / Archive / Ohio State University Radio Observatory Archive / Aug 15, 1997
Ohio State University Radio Observatory - Wow! 20th Anniversary Report
Ohio State University Radio Observatory Archive source material related to this case.
2 excerptsInspectCollapse
#1 / Archive / Ohio State University Radio Observatory Archive / Aug 15, 1997
Ohio State University Radio Observatory - Wow! 20th Anniversary Report
Ohio State University Radio Observatory Archive source material related to this case.
Original reporting is separated from Atlas interpretation.
OpenSource Summary
Ohio State University Radio Observatory Archive source material related to this case.
Atlas Interpretation
The detection is real in the archive, but single-event signals are hard to interpret.
Original Excerpts
Source text“Ohio State University Radio Observatory - Wow!”
“Signal What We Know and Don't Know About It After 20 Years Written by Dr.”
#2 / Archive / Date unknown
Wow! signal - Wikipedia
#3 / Analysis / Date unknown
Nrao
#4 / Archive / Date unknown
What is the Wow! Signal?
#5 / Archive / Date unknown
The Wow! Signal: Intercepted Alien Transmission? : DNews
#6 / Archive / Date unknown
Candidates for the 1977 “WOW” Signal – The Center for Planetary Science
#7 / Analysis / Date unknown
SETI and radio-signal follow-up literature
#8 / Report / Date unknown
Npr
#9 / Report / Date unknown
Npr
#10 / Archive / Date unknown
Radio Astronomy and SETI - Ohio State University Radio Observatory Memorial Website
#11 / Archive / Date unknown
Wayback Machine
Case workspace
Understand the event before judging it
Start here if you are new to the case: what happened, why people still care, and what the archive currently thinks.
What happened?
A strong narrowband radio signal detected by Ohio State University's Big Ear radio telescope in 1977 and never confirmed again.
Why it still matters
Source set meets the current publication gate; interpretation remains provisional pending stronger primary-source review.
Current read
The signal was genuinely recorded and remains scientifically interesting, but no repeat or independent confirmation supports a strong alien-technology claim.
What to inspect next
Why the signal is high
This case has multiple accessible sources, a durable visual record, recurring anniversary coverage, and a clear unresolved residue: the later light row is explainable, while the earlier formation accounts are harder to reconstruct cleanly.
Case Verdict
Best current interpretation
Strongly supported
Ohio State University Radio Observatory Archive provides source material for Wow! Signal.
Likely explained
This case still needs a stronger dedicated debunk source; current interpretation should remain conservative until better analysis is attached.
Still unresolved
Was the source astrophysical, terrestrial, or instrumental?
The signal was genuinely recorded and remains scientifically interesting, but no repeat or independent confirmation supports a strong alien-technology claim.
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