We’re excited to announce that the Wow! Signal has finally repeated.
Same frequency. Same coordinates.
The only difference, this time it spelled "4LI3N5". 🤔
#AreciboWow #WowSignal #SETI
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#arecibowow
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At dawn, at one of our Wow@Home small radio telescopes, searching for bright transients over the past year. #AreciboWow #Astrophysics #SETI #Technosignatures
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The #WowSignal is the most famous and credible SETI candidate signal to date. For decades, eight different telescopes have searched for it. We’ll present new results on Monday, March 2, at IAUS 404: Advancing the Search for Technosignatures. iaus404.bmsis.org #AreciboWow
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Arecibo Telescope Upgrade Initiative — Now Featuring 4,000 Years of Backward Compatibility. 😜 #AreciboWow
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Ten years later, this data archive helped us refine the Wow! Signal’s original properties and enabled the study of decades of legacy radio astronomy data. #AreciboWow
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More than 30 years later, this student helped save the Big Ear's SETI data, preserving over 75,000 pages and more than 45,000 signals, including some similar to the Wow! Signal. That is real commitment. #AreciboWow
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One of Big Ear's key documents we found was a SETI manual written in 1984 by a volunteer high school student, outlining the SETI project’s procedures and data. #AreciboWow
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We’re bringing the Big Ear telescope archive back to life. Hundreds of original technical documents—lost to time for decades—are being digitized and will be released in 2027 for the 50th anniversary of the Wow! Signal. #AreciboWow
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I recently found this keychain among some old documents and materials from the Arecibo Observatory. I think it’s more than 30 years old. 🙂 #AreciboWow
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This is how our Wow! Signal research is going: new explanation, new properties, new signals. #WowSignal #AreciboWow #RadioAstronomy #SETI phl.upr.edu/wow/faq
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The Wow! Signal was not caused by a comet, despite proposals made a decade apart for different reasons. #WowSignal #3IAtlas #AreciboWow phl.upr.edu/wow/comet
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I will present our latest #AreciboWow results online on March 2, 2026, at IAUS 404: Advancing the Search for Technosignatures. iaus404.bmsis.org
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In 2017, it was suggested that the Wow! Signal might have been produced by hydrogen emissions from comets. Ironically, the Big Ear telescope had already observed Comet Halley three decades earlier, in August 1986, and it produced no Wow!-like signal, nor was any such signal expected. #AreciboWow
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We uncovered decades of previously unknown all-sky radio data from the Big Ear telescope, collected during a much quieter radio-era with active interference cancellation. Here are the projects, receivers, and the methods used to record the data. #AreciboWow #RadioAstronomy
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Five years after the collapse of the Arecibo Telescope, a radio telescope is back online. The signal is back. 😀 #AreciboWow phl.upr.edu/wow/outreach #RadioAstronomy #Outreach
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In #2026, the #AreciboWow project will reanalyze more than 45,000 signals detected by the Ohio SETI project between 1977 and 1986. The original Wow! Signal may not be alone.
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A 45-Year-Old Mystery Solved: The Van Horne Hydrogen Cloud phl.upr.edu/wow/clouds #astrophysics #radioastronomy #AreciboWow #seti #WowSignal phl.upr.edu/wow/clouds
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A 10-minute animation of all the Ohio SETI data recorded on the day the Wow! Signal was detected. www.youtube.com/watch?v=uuin... #radioastronomy #astrophysics #SETI #AreciboWow
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Our scientific research on the #WowSignal also revealed many previously unknown historical facts, which inspired me to write a book about them. 🙂 #AreciboWow phl.upr.edu/wow/story
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Our #AreciboWow project began as a search for Wow-like signals. It led us to an astrophysical explanation, new properties, and even a trip to the signal’s source, where we just made a surprising discovery. 😉 phl.upr.edu/wow/trip
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We’re uncovering a remarkable treasure trove of scientific and historical data about the #WowSignal and the early days of #SETI. Your support can help us bring this history to light. #AreciboWow phl.upr.edu/wow/trip
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I visited Bob Dixon, who served as director of the Big Ear radio telescope from 1973 to 1998. He was the driving force behind the Big Ear's SETI project that captured the legendary Wow! Signal. #AreciboWow #SETI #Astronomy #Astrophysics #WowSignal
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The #AreciboWow team headed to Ohio to check out the legendary Wow! Signal printout in person and dig up more data! 😃 #RadioAstronomy #Astrophysics #Astronomy #SETI #WowSignal #PHL #UPRArecibo
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🚀 The #AreciboWow team is heading to Delaware, Ohio!
We’ll be meeting the scientists, engineers & volunteers who operated the Big Ear radio telescope to gather more data, logs, and documentation on the discovery of the legendary 1977 Wow! Signal. 🌌✨
#SETI #WowSignal #BigEar
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If Wow! signals occur as rarely as galactic supernovas, roughly once every 50 years, then statistically, the next signal should be coming soon. 🤔 #AreciboWow
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En space.com tambien sale un artículo sobre nuestro trabajo en #AreciboWow (todos los detalles en Ep519 de @pcoffeebreak.bsky.social con @profabelmendez.bsky.social )
www.space.com/space-explor...
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En el ep519 de @pcoffeebreak.bsky.social les adelantamos nuestro último paper en el proyecto #AreciboWow liderado por @profabelmendez.bsky.social . Algunos medios se hacen eco, aun sin haber mediado nota de prensa
www.dailymail.co.uk/sciencetech/...
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Third, its frequency was higher — an odd result, as it implies a high velocity toward us, though such motions are not unusual for stars and gas within our galaxy. (4/n) #AreciboWow #WowSignal #Astrophysics #SETI
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Second, we found the signal was much stronger than previously believed. Our estimate of 256 Jy (at 30 SNR) is a very conservative lower bound, and the source is more likely to be within our galaxy. (3/n) #AreciboWow #WowSignal #Astrophysics #SETI
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