This is how the Three Body Problem starts
Space news: Scientists discover repeating pattern fast radio bursts https://www.usatoday.com/story/news/nation/2020/06/09/mysterious-fast-radio-bursts-from-outer-space-detected-again/5326597002/
@Dyann I read a few similar articles about this. As scientist develop more sensitive instruments we're finding all sorts of fun stuff :)
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