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-9628301457-gov.caltech-edu.pp.ua/post/0734592168

  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,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIzMiIgaGVpZ2h0PSIzMiIgZmlsbD0ibm9uZSI+PHBhdGggZmlsbD0iI0IyMEYwMyIgZD0iTTE2IDNhMTMgMTMgMCAxIDAgMTMgMTNBMTMuMDE1IDEzLjAxNSAwIDAgMCAxNiAzbTAgMjRhMTEgMTEgMCAxIDEgMTEtMTEgMTEuMDEgMTEuMDEgMCAwIDEtMTEgMTEiLz48cGF0aCBmaWxsPSIjQjIwRjAzIiBkPSJNMTcuMDM4IDE4LjYxNUgxNC44N0wxNC41NjMgOS41aDIuNzgzem0tMS4wODQgMS40MjdxLjY2IDAgMS4wNTcuMzg4LjQwNy4zODkuNDA3Ljk5NCAwIC41OTYtLjQwNy45ODQtLjM5Ny4zOS0xLjA1Ny4zODktLjY1IDAtMS4wNTYtLjM4OS0uMzk4LS4zODktLjM5OC0uOTg0IDAtLjU5Ny4zOTgtLjk4NS40MDYtLjM5NyAxLjA1Ni0uMzk3Ii8+PC9zdmc+);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-9628301457-gov.caltech-edu.pp.ua",cType: 'managed',cRay: '90fd22f24b3c398c',cH: 'fmfjm59hQ1hiu9FeQY4kC89Q2rDp_ZqDn0NwrWp8ZJg-1739201385-1.2.1.1-M.4c3TsTMBckqtQBdch2P01qqgmYOR6c2q9hVtER7jAfs7YXtBdQgXpxKktwU4Tq',cUPMDTk: "\/post\/0734592168?__cf_chl_tk=XSAv_CKHOFmOdZk.pWFIXgBckVTQyCTTsZQypAXNtLw-1739201385-1.0.1.1-Z3vQZEFOO6QuIE0i5gkHFMF.5Mq4b0MMYqvMnG43i4U",cFPWv: 'g',cITimeS: '1739201385',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/0734592168?__cf_chl_f_tk=XSAv_CKHOFmOdZk.pWFIXgBckVTQyCTTsZQypAXNtLw-1739201385-1.0.1.1-Z3vQZEFOO6QuIE0i5gkHFMF.5Mq4b0MMYqvMnG43i4U",md: "glPWUo2dI5lkMosZfAHmJ.Ur7ddbi8qlo2iUig0dZDs-1739201385-1.2.1.1-vabe0QB_pn8DQm4W89kN6tonrDikA1WVQ8c3y0jK6YuhHdnCXmqnT7zddi7JIKsFMvChu.N2OGzfaCK5s5VCTxaG7PjFum0Vp9DngSuDlB5hX3np5DsSw8CTKAo5tUAThRw8gx.2BvA_CpjQr3egj8QrZmEmt3VwMCLZWFkRXg_5unse6A7IdIju.ulKWLvq3n1ZvyygoT_PP6eucCcWqj4uQhpSxOtF7ktv99L3_0Revqne2hRp_TDyeA6QSjly5op4sOAI.BEhUpgBYXVuyascwzAOcovSiQt8ltn9TSnYcF7M8_p3P8zq16hTbt_LfmTiVNZJswDObertfcNJib8jHvQRZmBXUo_BYg.k3nvqAWG2ttR5m62xAxVC2PXoxxTmk4G1MOlLbI5xsWsgBKPGGu3S1ewCfk8zcDDybWNeBqnssad1mEoH3EVAZuZcsvvEzVAr3XBpmnqsjzQTwIUIk9H0TTjtg1OgpPihFQhCDNs_2bJjNm8Fvki2l58QHx.k4SqvWV4sfkqgSyc5.kKLTyexlMxUv1O8fjYlew3mQZ7ULlrZLEHbYN9Zc0CTEa52JOFI8DJbhnIyZFt4vIFX9TPMog6hHmV77H3iMRELBSn3EH_VuukPGN7O9WF2MrIu7ADEgUPHPQukBNWn6NsPU4ggh9Cjcz42maQB5iILnuVtuSGM1JghoI0C98r2QGZr3YMAqQAfvmkZCbhyKTDOTJ_PaRbjVoQ6VGfGCcoSn2OnI0Wzysl13kLF1BELZ75PVMbGTXM5f4ejSELaWVwI_dacHz0i1_mN4TkBh9KmsYuVreddzJNWCU2VUOZK8w6kSSW3.aTeXPRdbRZBQP9NBt31hCEvq8jBuoCKjHPxs7J7ptzwlmQ7iywZTPt2ZAkfOBVlNQDLPnEMmmeFZ0hO3BYfgLoUbZo.UIbr3rcR_kiOAqE4GUTiCJV47q7SQ8DbA8SsnJCgbWrLtcXjSdV1EXlmcEz1Oucwulgq8kTgRkuvKT3pEfK5J39adIelKivrzTQTyav_wneA09ZWQvp3ngU7_05ERZsoZ7STqAIRGBUMGuKlhxv7pwoiEspmIddzlyj3jFp2OGySuRgRC1DpPBAWdJGhXoSOm7v60EloXyf.eg3Bne9deif7CFk7rvdFyQtfHm4oOtglT8B9awOEPfOFzXLwiAYvfDnBGf4rNH6yrWwRWIxSN0KB_thBCax4aP202HyhC0y9KTev88sR2QuJvrBxMFzPi9GwSJyJj0l34ewU9_UbO4pV3WttTD1akdeDwbIDeQnUpLXpFoBywUtAKBRmt4y526yRpTBYV6RxOXyho1eCMa23UrLUDaHVutrF4GXFhiO5G58sn_18EFpiMl_27BZFtYKYL1Kq7hTysFg8.Gm2Hx2DK2Ou51NfPR.BPmsz81MuCZ25P9HZoEYKT41FHDqiqz8OzP3jnjWu5haCM6aMCBaUK3WPMtItZLipo86J.F.S.YdX3UM_BdbuZ8pV5z.Hg7TYGJMwFCOt5VGfB6KKcMocH9ZqvoN13g8XOrV_yFDOpWpBWUqBd2_OS6q5Tyq88Ita6uTVPVHciwfgQP5kH3aGX.EQeEi8fYD_JcUqN4XjQhVb1qoTzNGMuP5tB.BbfIxES66QgrFuQvHcyssNuXiJVjDXpFgbXMyBWeqVCOlwfY8HI7ziJuJPKWIYjcuwaWhFJl38cuGo5PdXUuO2vTGrmt97iixaPufGraoaOIO73k3K64b5FaboPWTypnivCzaIYBgXO0ssukvm0zrQ4pqGF4DFb5NXfghQp1uNadI4CRVdtN5D6sWKKAGC4IRLYkrCYPFjDQRWM7bpV09YXiOXtEWndAfVrcS90uTRT3U.II0A0HXxJXaBCMH0RnmnCKy7Ki.ab0oKUURTRqPH5x.ZRqVXt3WkcRiiIsdcIiyhLkQuiSKaFHrJ_JPHb7on3PJF6gJpUUnqXlgMUnXhwrVY.8EFszignybD2JjHszg4VFII9.pMPdEFe2SoGGPtvpsYOrAVtS0DYb1TNy3uZAqoJMJAGlgA_Q22Wwm2hoI0tRoyRQG8TLTiybrTj3t7wq1AlOadpbObztmuMM.PWNgT1YBn_vooEJgyBkg8WtoeStRpTpls_qJKM5duvmyo7MIiw88PbAtcV5zlMcdQTKquozR_Stclr66CC0781X1y5Yk.xz2k2i92rLv7vhLkw7YP7jDKVdYOfQJgT6QAn7TpqhNuAjNTuse0ZB1qJt0PaBbz7A",mdrd: "j_qrdbEWAXVrjcYIfVeX0mgjnynL0RLxy6fGwne6S2E-1739201385-1.2.1.1-VkcwS9QSxNv_BxcXJMWoMvVPAyX3zrG25X_H2Vsr1DJQ8OWpv3MMGlS_d7X7wz88R4fYB2ElQqvIwJOv0aJYCEOPxzExB261YStcjt.Nwa3pbYUPKHdoSrkivN5z6UZAVbDrLc8UgWCoyu1mSkqtTaaAATgYplpKkW_MRnTwfwxnPUbH5HzSk5ZR65cQ8lvt1rdc.wIGZ9jqDTOSluqNcFVUVa3c.Fodoa5XcrSxtFXsZEJMkYem93h2KncvHyrYbEbfxVPvcQtOzNq7Z41jbA34mjDaYcJuG_nrwLAvxhggkz0v.Ypu50GkI5E.ZnwOaTiESHt51OZltRFIHboo_tH26Jv0U3SLbEWeP_P1CzuFRh_AEwAFCiOVjAXhCak.pcWxRZbCGcC4spwIZCXebnxlbhWuyiTRGTupIKSen1EV_vQ7HQiEeJuHfWNj7XqabeuXGodwkotmoSHy0DyFWk82FpMuQFo8FW6fmkJCcStW7RFQJ68sEvk3ChUanizGTRPNLzwIfwehWmgeEK9p98He8eRO8YA9ch9WuUsbGcidHlee4bd3ukXwBdRmqfSXVL_MGhQIvX.o3TPC3u2ZPaKVGvk38DzrAn1T6v37Qss_I_B5dvYubQDeJ.d7JE8qX5hvYlN0POd0rnYMhG_iiUd10GR28EAtwnq58_4OZyQJsrReCjXX9fRnKKG4QlCR1kuOFQoyQiG2e4gpZbhkaUYrL3lJyt2Y.VAJ91N_XGKT4fwy5iDBP5u7I3JpxS0VfirchTQZUVxBx1xCDjUy7OSCMFJsgJgbN5afJxYdYXAKm76ebxctDWl5PA.F229hjqW5wn.50aTby.3WY_URanB8sp74Ka2vSIeV.0xAZfJmi6..Em.ZmYvrzokWMWuJkKkY3BEQT5iFGcwnq3ZCbSW0GnVxjrE.YXPeNjONi7ljIMayQKV5iG7ZTcjRZ97bVPsG85vMxqpJMMSY7LPjr8ov71BftVSiH5LfS36xJtOXTo7EA_HEjYfkhYRKBQrkA9WjN9cNwm6hwxSH2Rj9q4DE8mw0cl5X7BHHxplPuktXuCyGCR0PFhprcUPvWD2eU5dcoHPeHhoZi6T0tAs7kWUh3_2ZwVW9Lq2opERoA.OetFn1Eivh1jrnwSzty8xsRw6BzYRHfHij2VFfZtxF5Q3deCt_H8g9n8HSPRUS3mb_JaNl4_AhkTqlYp2rRGDrc1Hk9FUaZ4YL9.9POQ.bdhOYcdsRG2IEmXbaUZf4Pr_prJrl3iGmveUOD8gwvQIbhYSoTLSKNuwupPdnMJvPUbqLh5MKuQxGVh.BIk9rHCyp4VzznApiSs6RQOjpYypIIDzygEs.d6QB69VZSAgfcYF7rJ8XEK1wClbkr8PdJY1ukhEWASmJmnk0A8fnvLU6HfpNAAcD9raqbwRaeeE1PEIZjOR7j6r.01qnubJDCoyynSI_6n8gk.I6IgCejWtN82bAvOS6RXrHbdBh5FKKPfZwaWheezozXfb.mqWIrGlEBzyTMvWChfmZdo9OlEdlcZOUJ.juWTj7xJCtwFnZOZZDXT0rHikLgTveRy85Q4GdvVKT8tWCBZJmD_12bfTavvD8.nojnfxLRwVYnRqLEdHFcdbJ_zZoRiPkr6RL3hDUpm2SC2RW4UYpkYHorbnLnkPCwMw3BrVobYXk57WseLSdw7qV8ceZUUbIBDWZgJ4u5UmuUiCjXsiO9923N6b0vZlzx7Db.dpFE0oAcOJggHtLbvw4BJ83Cxc3Rw2W4L8CeAelsnVFe1MHq8jjdEjzw.b1lhMk_yMftbhbLscOJWLFqT2K_AUFG.T3b9NPp2c"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=90fd22f24b3c398c';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\/0734592168?__cf_chl_rt_tk=XSAv_CKHOFmOdZk.pWFIXgBckVTQyCTTsZQypAXNtLw-1739201385-1.0.1.1-Z3vQZEFOO6QuIE0i5gkHFMF.5Mq4b0MMYqvMnG43i4U" + 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