It looks like this is a web page, not a feed. I looked for a feed associated with this page, but couldn't find one. Please enter the address of your feed to validate.

Source: https://mit-edu-7235614809-gov.caltech-edu.pp.ua/post/7235614809

  1. <!DOCTYPE html><html lang="en-US"><head><title>Just a moment...</title><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta http-equiv="X-UA-Compatible" content="IE=Edge"><meta name="robots" content="noindex,nofollow"><meta name="viewport" content="width=device-width,initial-scale=1"><style>*{box-sizing:border-box;margin:0;padding:0}html{line-height:1.15;-webkit-text-size-adjust:100%;color:#313131;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,Noto Sans,sans-serif,Apple Color Emoji,Segoe UI Emoji,Segoe UI Symbol,Noto Color Emoji}body{display:flex;flex-direction:column;height:100vh;min-height:100vh}.main-content{margin:8rem auto;max-width:60rem;padding-left:1.5rem}@media (width <= 720px){.main-content{margin-top:4rem}}.h2{font-size:1.5rem;font-weight:500;line-height:2.25rem}@media (width <= 720px){.h2{font-size:1.25rem;line-height:1.5rem}}#challenge-error-text{background-image:url(data:image/svg+xml;base64,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);background-repeat:no-repeat;background-size:contain;padding-left:34px}@media (prefers-color-scheme:dark){body{background-color:#222;color:#d9d9d9}}</style><meta http-equiv="refresh" content="390"></head><body class="no-js"><div class="main-wrapper" role="main"><div class="main-content"><noscript><div class="h2"><span id="challenge-error-text">Enable JavaScript and cookies to continue</span></div></noscript></div></div><script>(function(){window._cf_chl_opt={cvId: '3',cZone: "mit-edu-7235614809-gov.caltech-edu.pp.ua",cType: 'managed',cRay: '90fdc97cfdffd690',cH: 'mQ7hg9UzaPebKntcrUBG0G7JVSzyA4Dbd4HRIhNVyT0-1739208206-1.2.1.1-S7I1Krcq7WwJUlX3zvqfN_yoXlI3RVVocxmhh.NR5QbGrRLR.j0o.ZyTUWAJ4HnB',cUPMDTk: "\/post\/7235614809?__cf_chl_tk=jvclNbnbpAuL0xjibXsG7ToKWKHEhEQ5TXVE.uvtTDM-1739208206-1.0.1.1-AMIaa5HL9YZbHJEGzo35tmhIh70fkJciL42Kl7JGbyM",cFPWv: 'g',cITimeS: '1739208206',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/7235614809?__cf_chl_f_tk=jvclNbnbpAuL0xjibXsG7ToKWKHEhEQ5TXVE.uvtTDM-1739208206-1.0.1.1-AMIaa5HL9YZbHJEGzo35tmhIh70fkJciL42Kl7JGbyM",md: "NRg9fvNbX07QoO5olcmiF.bO5yykF0zjms44oUT0K_U-1739208206-1.2.1.1-XF.EobrnpMy_cmiGersk5kXfa3D42GzyMNSmHSwLT9o0WG0LL_iG.__ij8nMwuAq.t.LU7I2blnprkglKZBInYMAB4bNtV7_qcWL8m2oingkVPqJGtb2ZhTMnviTnlGaxpHT7ZYKHQtxpj_LizkWVX7oXfqBS4E8LRxRAzJB0Pqxf7RoVuc77thAzQ4G4YTjsxqZDf6nfRJo_RDzJc7AZUEhNWM7mmp_Yc0bZcREt1gdu1PiTkd_etzWOIVioxMPfUeNRiDNZWm5wLyLvVVHe8.B_hM7nK6c3ETiN0ODK9x9s.fqvVRTNg3XQiU_Ga4LYR.y1m.0h7rObqPdzeyLCNfZNc_V3f8Rcyvw7RoaMAKLCEQxE6ISF8jIK.oEeMPte8hlNLxlAwW.NU9arvaUAexy1vtPYkrSZ_wxjnz6.0gBsraJ.DAoZ7xFofKNrlmTHa9K9oVS7j9Z07LpTpILd4EAUucx8Co5v9cvlPMajSHiZjcsvAGDlPnYQm0OmydAr7eQZ4FMUSbAApwNCODFhLiDRQoz4azVJiU5tpgAMjQeyEQlHdSa30Hp3kQIYkT2hUHMaOFMgzabp1lsDkASbmqN.g6L6O0UJoLbj1nsSQgYuoJq1Z_dZ9y5RowoZlQ9sP5xqu6XsB0NFuANS3cudW2.cn0oyF2kiPljcle0u78Kuh8bj8iIGOaMyqCFc3AglAKHaF8XkN0ZwDKsGFaRtuhH7VvSk0daYmU5vTe0a1d3kgRTKjPGd2NH1PEpH8rUXdRtkp8FakgTqnR2BBCbQzQGoIY29FUtZPietVOJ3kMy_G8e.5.FTM32AmpNsf5KZeCEqtqsIJkJb0gvUqRv88m.rMBuJeC4Us4iNluZ..2PzSNKArbFpxYIaLvt4ROxZiSuOO20vurR.OYhzBqdz3hwB9bI8uk7rfk0O70gbgkyXLrnxORpZ.BCzsyTLKbbunGCNGWL6lXYBsl2Nadli88m4UtiWdQVOovSiV35mgXnQ..XlfyWr6iX3PVzKrloVN5KzZ7vW.Rv_OIUbCo1QXM5AHuGAOTNX.aYVnLxjJT5GUmCofpU1Qn1a6.VjNQ9Phe7A1.0i889e9r7dhCahIyQxVOIBNoHp8ECPRtZrxHNjIvV_H7ReewkE19KlIHGGAmMZujjkP4AkJeAUxeLzOuAZuM7eQtIOVjWzLYrPBMSQp5GP4ZbVf636IfmRCiRQ2uUy6vw1SzaHUkQ9eHXhDb9VT2hXATtwBPaPeZtBxFJ1V.yLzjj17r.C5H8bT3GEh3Is3NNqBNhdr3.4vfJJtI9f1XPjXg30SogGC2ba2sb56e8ntR5WJVfe.ZQYiImt4X1iLr..gSuRNGRI0CbKsAv6qseceiL3i2p.XCSeVl3Z8SDXeSotRAGqzckqpKskEXkv64WdEXqL8Rrkk9SDvmBoLKE3dI6MMxPEhB0IUplzx5HrHJ7.MWfjt68fRoa3esPLjt2k0O.WyNV1VMc9rsw8Z4vCCenqwv_cashiHoeFkEm9CkkXSqrRAO_JM4Mf.yWmw0gVBE8HywrbMrRCahIJ3nZmAh57WNigMPDNyOzwP0vOXqwgvmlbnvYmyBC4zHxJZPaCf9MXSMU38Vv9CPXqsIp5kdv4JmUYLmJzpfe23MvFftIAfDKVIkII4sYmHJ7p7988_mgrQJaCIkGNR5r7Q9ecNf2xUwSTCy1.LPBOrE3YnmzwjYjutDIDMq8OsauF6nqBVwstTaRbfZkxv2Dusyy8gUdO1M6dq0_P13MgXxeRJTgYFuh7d5ZW9CXHQ1S7kJSuQ_4wCNPWAP11Miv__MlePaYhUOj2818KgKPYGPINSXDvTr0z.rFY4TRR0b4AZbSNDzmGF8iCTKYygQT4LOBq7xPdZBWapqidUVMJhDtqwt5MkHkMu1Ljk0iFZLhMSbwA0rxjXaP.HHc7BX7hgNYaE03g3OezpLW10Me3fHy3LdN3FpQaGIMzsOekTayzR_h_0GDHrYbGlbay3RpDK5TWd7yCWgcldvGiEAJIOwnvMgO8_buJzFwgKB.4ilv9NH8vmLzgCEBNLihC0kE46YDCvSbyfoPBaNxN6rugtGOITb9hLCEhOZBlj6s5DG6x6drU.T6AB2xhVhkuJ2tO6RwMdodtjkaZ39TL7TgAvF8UbpUF3SQKJCTfKbvWuDTIFN9bnEW7NIX6it6sujHWa3.X6LzLmVuDJbIPNADPxuqd8j5gnNHFRdOadnKLIcEoZnA4VMTA_zrnCqWlg",mdrd: "aftA6iQlWv5Fn_X9vieMAUlq61uT.hJY7mOx52vpqwQ-1739208206-1.2.1.1-.8rQ_OfVpixV7GAfmg.zjvK3pXWJcHZbomHnetYUCLYOQldW9ODNqcz.dtWWeRv.XGKngH.vez5mPTuUDlTKvuk0WPE8h0CcEwgTG4RsZIDScwJEQkY3agZqzs2uqP4CTwg1oHZ6Et9.XOLoahj5zc2.EUeJe0Ga1bqP27sjSzl783ZHzmM3GAawPw0sM3z7kGexecxWAWtGOsVtoEJ6hlFhBgm8jnBxB1VRCbVfrJoYz5wxIwh0vx2zX2w4Mh5XK97FCqzmy0TUA67eOq_1v8VauUWCt2MIzkTXbWYylJgF.4Yu4v66jaVYfksxtlmqhFd71ImLJEAlZq5op8mLo7wmbkp8_0hI3BW.6osgExKnUbn6dQJrnMuv25smHwT0.yn.1g5uVNFGLpzvBWAKAV9UtBlNhXvxTE3.8VdWZjyiPmDr_4TTgG.rR5rvb1GGYyiqedX3vD.RgegK5ZBlfiT5VT6UFlycL8mYuj4grlceJagI51d_L_pmkQ74zl9nQFRcxWi0JvEGZ99povrjEq116pqYSbxWWm3mBIE0pEpW4iGcdNNwQ9KTHxqxz2_4b6JBnc22vyDk9O2aZvesXMS0pbi6gB4Zrg6G2RvOFvf0HgW83AUpzBn9BJcyfQqZ.37qnvZb.yfLUfgNYWj9RIx1pXEwl_8vwBlqE6A9SFCbzVlEvpKvSrodyKIxwc1ZvvAmd72s9z23aVob04f_qf6su1xicaYPiyZc1Qk98Qau4wVVcfa4YOA5mHqBmBsErJ5vdZ7YR3wQTJfcJrZUdGXlXLFTaQZi1YH1QTUD9I.20fF7UYZALSW.QGhV7TIMw69VBt1CMa_5z7YhedOvCPPewgHVzUaSD.QIUjhJjwOIdndcrgCMtU4GTB04Y3SCnJ5E6CxRhUR2TKQJcbHRymMG.kxjFxdjhibc7__vsqpNB3vNIrYW68qkAHywERaXCv5_EmDYKjgiEYWK2WiVi5eWtHxoATX2KECDvX5p7fwdQGNiQZG_GGYSECCKc4gzkS2JS5lHKIjWAxmtUJ.hfY4XdHgiaH3FAg2O0r66uqRiecskQGmwrjaKXhGnfVgfmyEBNLYYX9o0MgWXOVVymhtFb59P8z4jyjyivd7QE4yx73aLNsvWyJjItmSXaY49zUEhyE3wAgDvhCLlnaW1j6.kX54hy6j13qKI4BjAnqGMiZVNYCucWzQ74wYrEHBjMnXAxOc4lr_1ABODCZBq_Keplj9qZCxfVpqWEsckxJl_XfjH.DlywuTqHQ85GilNnZ0ojwQPavOJSdNZYh8wm4UHaPaPspz.X6hHckL0WanJCjHFTrm11HAN2d3InuFgD8naa0SGX3PB_vQHkQNX7Kaj.yZieTe12Mz9MaZD_Hrblnyj0BVVCOoIB7Uj1GvK45Ut.pW7oV.at1JKwzDPzmkXNedkd4tAu4ETXNG6VjQd43s6RLYJsPx0mNhdNAG9WWsQgBWHCQmQQMtw0Zf_v8hSA7fhC_zYgd.xOZthf6xEI5lMpJJAKTKGmIK0qooHxjCWy9SDmwE4jt4SfS2JaswCjFuRMmP6JDCHfwLAfAYCO.ycC3SaXU2IhnuHTLz7y_sBJdZ3Z.VIzP6pZZ2rIQYX76ExEOtWRXeoGpyAJ76CMUy9.u3aIO_W2jTf.kHOgd5Dy4upo85ZxZQkwu0kRRgfC6cjffznmYZkZrR3wzfyer4V4ID6.rwMvcAqp3i02U0Dp.keA0RuT1g5kmPsjgmnoW_5ML.1ROBUn451.IYwfpzmST9DdQXhE8IQSWLkBwW.3g04nGQKq.yx2MVNKG.bMPeUwKdIqs.kJkhO6L.CIyphS1CLwqsPj0.T6BZC"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=90fdc97cfdffd690';window._cf_chl_opt.cOgUHash = location.hash === '' && location.href.indexOf('#') !== -1 ? '#' : location.hash;window._cf_chl_opt.cOgUQuery = location.search === '' && location.href.slice(0, location.href.length - window._cf_chl_opt.cOgUHash.length).indexOf('?') !== -1 ? '?' : location.search;if (window.history && window.history.replaceState) {var ogU = location.pathname + window._cf_chl_opt.cOgUQuery + window._cf_chl_opt.cOgUHash;history.replaceState(null, null, "\/post\/7235614809?__cf_chl_rt_tk=jvclNbnbpAuL0xjibXsG7ToKWKHEhEQ5TXVE.uvtTDM-1739208206-1.0.1.1-AMIaa5HL9YZbHJEGzo35tmhIh70fkJciL42Kl7JGbyM" + window._cf_chl_opt.cOgUHash);cpo.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(cpo);}());</script></body></html>
Copyright © 2002-9 Sam Ruby, Mark Pilgrim, Joseph Walton, and Phil Ringnalda