# Has the signal ever repeated, and what would a search need to find out? · Wow! signal > Three answers have been proposed. The source does not repeat on any timescale sampled so far (seconds to decades). leads, with evidence 2 for: partly… Source: https://mysteriesdept.com/mysteries/wow-signal/questions/QST0CXZ4PKM6DRS/has-the-signal-ever-repeated-and-what-would-a-search-need-to Publisher: Mysteries Department Licence: CC BY 4.0 (credit Mysteries Department and link the page) Updated: 2026-10-26T11:59:08+00:00 --- **0** # Has the signal ever repeated, and what would a search need to find out? Asked 26 Oct 2026 by [**apollo** ](https://mysteriesdept.com/u/apollo)·3 answers·0·0 following **Most likely: the source does not repeat on any timescale sampled so far (seconds to decades)** Ahead on the evidence, not yet confirmed. It needs two reviews to be accepted. ## Where it stands Three answers have been proposed. The source does not repeat on any timescale sampled so far (seconds to decades). leads, with evidence 2 for: partly supported by its tests. Two are still possible. ## Why it matters Repetition is the one test that could settle the case, and the question of how much observing is enough is quantitative⁠[[1]](https://mysteriesdept.com/sources/SRC0CXZ4EA0349M/could-the-wow-signal-have-originated-from-a-stochastic)⁠[[2]](https://mysteriesdept.com/sources/SRC0CXZ4E260YRZ/a-search-for-periodic-emissions-at-the-wow-locale). ## Answers 3 [**The source does not repeat on any timescale sampled so far (seconds to decades).** ](https://mysteriesdept.com/mysteries/wow-signal/answers/ANS0CXZ4X6J08DT/the-source-does-not-repeat-on-any-timescale-sampled-so-far) Partly supported by its tests Evidence: 2 for Most likely [**None of these.** ](https://mysteriesdept.com/mysteries/wow-signal/answers/ANS0CXZ4YDM65HG/none-of-these) Not tested enough to call either way Evidence: none yet Still possible [**The source repeats on a schedule the follow-ups have not sampled (random repeater or long period).** ](https://mysteriesdept.com/mysteries/wow-signal/answers/ANS0CXZ4XY06E0W/the-source-repeats-on-a-schedule-the-follow-ups-have-not) Not tested enough to call either way Evidence: 1 for Still possible ## History 1. 2002[Gray & Ellingsen puts forward: the source does not repeat on any timescale sampled so far (seconds to decades).](https://mysteriesdept.com/sources/SRC0CXZ4E260YRZ/a-search-for-periodic-emissions-at-the-wow-locale) 1. 2022[Kipping & Gray puts forward: the source repeats on a schedule the follow-ups have not sampled (random repeater or long period).](https://mysteriesdept.com/sources/SRC0CXZ4EA0349M/could-the-wow-signal-have-originated-from-a-stochastic) 1. 2022[Kipping & Gray: strictly periodic sources with periods under about 40 hours are excluded.](https://mysteriesdept.com/sources/SRC0CXZ4EA0349M/could-the-wow-signal-have-originated-from-a-stochastic)For: The source does not repeat on any timescale sampled so far (seconds to decades). 1. 2022[Kipping & Gray: a stochastic repeater is compatible with the Big Ear logs and only in 2.4-sigma tension with 192 hours of…](https://mysteriesdept.com/sources/SRC0CXZ4EA0349M/could-the-wow-signal-have-originated-from-a-stochastic)For: The source repeats on a schedule the follow-ups have not sampled (random repeater or long period). 1. 2026[Méndez et al.: about a hundred follow-ups over four decades, including the VLA, META and Hobart, found no signal.](https://mysteriesdept.com/sources/SRC0CXZ4CV46NXS/the-ohio-seti-program-the-last-decades)For: The source does not repeat on any timescale sampled so far (seconds to decades). 1. 26 Oct 2026Asked on this site ## Discussion 0 [Add to the discussion](https://mysteriesdept.com/signin?next=/mysteries/wow-signal/questions/QST0CXZ4PKM6DRS/has-the-signal-ever-repeated-and-what-would-a-search-need-to%23discussion) Help with this question [ **Propose an answer** Something the evidence could support or rule out ] [ **Propose an answer** Something the evidence could support or rule out ](https://mysteriesdept.com/signin?next=/mysteries/wow-signal/questions/QST0CXZ4PKM6DRS/has-the-signal-ever-repeated-and-what-would-a-search-need-to%23add-answer) [ **Add evidence** A result for or against an answer ] [ **Add evidence** A result for or against an answer ](https://mysteriesdept.com/signin?next=/mysteries/wow-signal/questions/QST0CXZ4PKM6DRS/has-the-signal-ever-repeated-and-what-would-a-search-need-to%23add-evidence) [ **Ask a sub-question** A smaller question that would help settle this one ] [ **Ask a sub-question** A smaller question that would help settle this one ](https://mysteriesdept.com/signin?next=/mysteries/wow-signal/questions/QST0CXZ4PKM6DRS/has-the-signal-ever-repeated-and-what-would-a-search-need-to%23add-question) [ **Add a source** A paper, archive record or image ] [ **Add a source** A paper, archive record or image ](https://mysteriesdept.com/signin?next=/mysteries/wow-signal/questions/QST0CXZ4PKM6DRS/has-the-signal-ever-repeated-and-what-would-a-search-need-to%23add-source) Where it fits Wow! signal **Has the signal ever repeated, and what would a search need to find out?** Key question · you're here [ Ask a question under this one ]