NOVAThe Mystery of Tabby’s Star Clip: Season 45 Episode 103 | 3m 18s Tabby’s star flickers erratically and no one knows why—could it be an alien megastructure? Aired: 04/04/18 Rating: NR Buy Now:PBSBuy DVDs AppleBuy on iTunes AmazonBuy on AmazoncheckmarkAdd to WatchlistWatch Full LengthProblems Playing Video?Report a ProblemClosed CaptioningShare:Share this video on FacebookFacebookShare this video on TwitterTwitterShare this video on Google PlusGoogleShare this video via EmailE-mailEmbedEmbed Code for this videoEmbed CodeNOVAThe Mystery of Tabby’s StarSeason 45 Episode 103Width in pixels px Height in pixels px Copied to your clipboardLabelCopy to ClipboardClick to copy embed code for videoCloseCloseReport a ProblemBefore you submit an error, please consult our Troubleshooting Guide.Type of ErrorVideo doesn't loadVideo loads, but doesn't playVideo jumps back/forwardOnly audio is streamingSponsorship playback errorOtherPlease add more detailsCancelSubmit ReportYour report has been successfully submitted. Thank you for helping us improve PBS Video.CloseCloseCloseNational corporate funding for NOVA Wonders is provided by Draper. Major funding for NOVA Wonders is provided by National Science Foundation, the Gordon and Betty Moore Foundation, the Alfred P. Sloan Foundation and public television viewers, with additional funding for “Are We Alone?” and “What’s the Universe Made Of?” provided by the John Templeton Foundation. This material is based upon work supported by the National Science Foundation under Grant No. DRL-1420749. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.