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-6078125394-gov.caltech-edu.pp.ua/post/3027681954

  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-6078125394-gov.caltech-edu.pp.ua",cType: 'managed',cRay: '91012404cff02096',cH: 'gvOQun9QAVag_N5fKx6LcYOQIE943ALx7.mrLZgXgKE-1739243372-1.2.1.1-qcE.NSYvxyG52vE42BXFutyRQ_YxIi88PoMZh1HzSLo3aByQO8fULVmi41.TzzsC',cUPMDTk: "\/post\/3027681954?__cf_chl_tk=xvBpJ1q7PGg0RrIUFItSEJnW1_ufPrOaWXMM4W9YXi4-1739243372-1.0.1.1-M_M7GG39kxVn_d0Hddte.xskHTVB6cRCANQrnJAywEs",cFPWv: 'g',cITimeS: '1739243372',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/3027681954?__cf_chl_f_tk=xvBpJ1q7PGg0RrIUFItSEJnW1_ufPrOaWXMM4W9YXi4-1739243372-1.0.1.1-M_M7GG39kxVn_d0Hddte.xskHTVB6cRCANQrnJAywEs",md: "0_QaIGYZOR42RzY3wyD5QZuDTq5xOj2OIWt8DbI9exo-1739243372-1.2.1.1-r8.kLzfC_twR53bUtUEOztoeSX77saHxRv8gnEtFwIbaZPqy01HjJpeZKz9MODRgmg0aPfM6kcSQKD1KMQb6DS74ytAlJNRlODkeQZu9_oX_BHcZufjMNBEYR320rbn_hzP1XFiEWHNzzPBNxoWcThNPg_HvChvi2PpNNtcgxd8ebDBkJedHoszzviJzMWap8XYdSrtCmCnvlSE11naPNQ3uPNCp4J51VHApjnKSrMbD9CBcDHJB0Ss9KlS89SAo6jOxEVlS_XcOHJORo4VoYzYl0uo4FGqRisBVRCcypXdu6.XJ3tp5qE34KQPDBoJOW3u2.XNxo96Ui7DzRig5gHmbKt55stsLYLYmtqlW1nuoN836Dsx.IKpxQiZKMZYyvHB0_VrkgMQNmqIJ1G6RLc3gZeGpbf_dZ.vQ25rJhfN_1ZsBor4yXb_PWEq6s3ET.Hfhf3ouVAqaaFL0QYReEqcYxvbFq1fAaIQQX.ni6zBUEMvEMb7gSKrDnNPdAnLFqyXCAIX_EMo2qRkBIMF5A0Bq9i8FhIFmgoKdcftqzOX3rXRTw73GApEGmAYmvB9qzsFzBzlg4ynIeucPkzFP9w5vx3Ts0slCYzpOlak2yXJYjae4VyK0AXKMgxy6E2vskhvgnTDH7DoKrRVyyCzfFKOWMqPK_cl9CkxxhmKzRAvYBeUSqYTf9mOgNaASWncuvFmIzjqatCq.HYflw4mI40FQYAuzf4_T5eQUz5QVCENuzE8bR7huNH6Xg4VpXCZsWo4u8i4l8Jom4YmeRtEBxUAWld2Gzd_iaF722fbGHrs9j78WeKDbb64PRwJ.a0WKg.bvXRgOoSMNXgSkx5hWXQ6FrKyv_LwRAPHhlha1bzeOYzvoYWrCVfy2tsZhaM5Sjwm6aG.py4El57Pi.K5u7rXTvTuLOWTHiaMI2EtTMtE9D4V70B7wOxPJmUK0Fnwex1k6GbPAphfR00NzRpIwhEg5.slwhgm3j_7fjxyVoaOIFJrFmk8lsUiLb5UuAFLb0X_omxjyvYUlNxdq36gX.msgC1xConTI3.lN07kTrvXhPh7ZTZpeYVr7f9FpplMxvVMbA_RYSR_PAi_mwZkA1dW.6cnhLao4Wb4kUQvo4QPvasmO.GmMGDugpvF1ZeU0LJgwvizvF9fwuuHG50_WtldS5.KkD.IMtdnoFosYZSCULNGl4q0Mur5J3ZZgXZWx9tC9lgKaD7Jozn7cfdBGCDNk8N8PYcQ_CzqQZuPYBqqEtEk6ShN58F2n0c5zRXMXoRrkkZGXIwqMbduUpNt.oJZ.8EOSGM9e8E4UHa1ue1_6jJf4F4kcLBrLF5NI97iJNE7HjpMcGHEiTy0ACikFaXxGBv7gSGEHq8FdGgCQzwb3hnoran_yl5Pw9i.veDm04Sc_6Qzr2Pxl19stb6HnssbfgOfdLiMRFYKh1dXbjqxE6fv3VgGOF8dXGeHeUoTTQ4hVktTJV_7Rnvld52XEPsWplDvLyfk7A3YlWW6DaRpYgTXH4Ia97RsW3NVFwOercuUixTCNJiwvYgpAlsIm76sDxLkyTqavUJOee_SrHUNTDW3IlNv3aYEjzGqfdx.QScplkVkkncBJRe.iHmXjCvsiQD3oQ72M0YzUsVqq0__ua52owQtn.BtuaaGkRtxx7bULx2mcYI7rwEWmtR0UCcO8ZLxKqpFrNrN5yxmi3iOJAb3ugLiHF_TV9IeUzcEGXvostI9kOBlmlt.bRoOz4LWedkOZ6lPMqDpuirVAmPEGPibc9kaBt17CBGTzm0onheka1641ixxtPdHDleV3kHj0PNhAa3NZV0iJNGVXyuhRs_aswik3xD_yTfxqQW.ihXsSD2E2tjV86N7SfNPVM2csniEKo_nsL4bhH5jUo8rEWV_uMyNC2.0q0ihXfsV_WIOB2NaHH7IKgnNmr5RQtEWNXl5zkgNCXG.HQnWZgR1sYmkv0NI4GnrCr74pAYXnLAj2fWmvr2yn2FDBGnk3hq3x4dVfvguVsJCEQfc6hMEBGosixfrlUQ19KJK0R_c2hkA_8MJeMOwKn9ltw_CKctuuepWtRCjN7s4ywjtf2m2Baj.omLhVrntTHZXUJ5ubWDK6dGEXZovboyvAl0BhjRQACa0X7H1sudK6kKG2bMW7JUkrxwki_GnsQyaFT.1bEZhExeGHeEpxQhs2eVUHF_1cjGB9TJ00J9sucrhlpiwWqhN0VNfQK1GkXPZ_KizejJ06U5SY5AWjvRmGPpcIvA",mdrd: "80.zdzy6P1NfNusGL_LEv0qkperWGRYCmniavn5FvsY-1739243372-1.2.1.1-QOrVPqvI.a9ELSwQsuLOXja3tXKzGPoaIkGrwdqdyNkoWaefPycTlRkU6xsE6vf15GNlhDiCJAui6vupvYMUiFQs5GbbijkTjKL_I1NW208VK7hFg31L5NI_m3PDjJWTWj5ph5vPdOkLeb5DVoPiFmV73LLahtAQifIf4oeymaeChx1lkPYP1sdiOsVVh4v5T8zwB093qkts_5PUuzZCCcoexf6sQ.gNgctasASRGcqQtLsAuB55yqLJ8L_onTI4pfO6HD_Cb0gq1GTJ.e3YXSWpglk371HK7ryX8vxQ8ESEWCO0OVqXIa4bx75TOIeJJIQXay93w5GMylPG0Ikm9VB03lgDy6JzpnSFKSD3egY6Oaaqa_9czdDix99eHBpyrVMhehdtBveiSRjohQklgR_StyqfIck3DtVTPXnxmqYzXJyi7TYkk9wvFW8AKVXgC1HtW9re5mUeZbktZfGVukx.Qt76RlXdZ5w.W5UccB.LMZxLzBshTNjFxCpybZ23O66S2QXDes9MCHK8EoMs54wkxSSIiebIdvH8.pXDy0hhrgzM2PoXpuWB9FIx6j1MhTpJmAFBboRm.66FypgL9HwKVoRSFqd92TW_rku68BsmI5lzzv5lOfuHYveLqijzhD9Fm50fh7CWgMWtmJ31EzueZBbzpZJcNp6uMnml471GAhjZS0XdbJ89XNeQJJOI6RSdvvpaMlKW43WI.xSlYr86e8WI337kdetuzdak02MKqa7n57LVEDBOvVqZ.mO6k4MP4XFAQjDivn2kIa6DosiuYfGtjoJx89MPe6lyRzA.vbVARl.fF8G6wyp2g0BgQEZ.Du2GyJz.lqWRaLQzjHRjYu3kNn5yB2diA1UjISkp1pcPOo4Rbe0rqfdLRoNYgxdmUT1f_BnVekNGOThH2mULQIGhqcNy73kVTuRdYDPB8GLTMaXn45sabMSb2ttX5wNF_kj7HrCYOjG4uSwleFWJJb.LMZsCTimMqRya2AIaIosMKTkZPwRgjNy.ntBFy2mgo2pz85h2baOxeTcCLxaORNEbgyc8XLlHL20wHTclYB65rzpyQmoFMnakEeU9a326Dswm2ub5h_ZoRRuuEc.Mtu1Yedn2vRxxf2d10D5UWPBuBvQtCG6jcA0qlNUVoovNSgcHXC59u8W6SuTdvPaeEGHt90.hEXefEWC8FFYqgdW_ai4V0gtH6QYgaNujYIbccaNDTh3OLBWnLcPJh5KTi7VWiEpexoWRKiEcFyEAvEehe5mthj0u8hVSlGYR9dHvduslB8gFLcYdjP1lg2xtVAtvmeqQqahOcVp.YDFoZh7d8NOW87Jf1gP5xF9e.TxfhvobAzhsa0bCp5pSCJ1rCytV5rCnmvqxDc69d68P7E0D82943gFGrgg4nteYaDt7rxhG05K6GZq9CVA_Kmz8Dq5jU_IPs.wqCcNmF67v0kFFId_e8vxIV4OnYYDslvTUilI7rGmo5NnjjW6DB9qVXWZKbw1ladTeoYJs.Xi9EyqyK4gJB4aq2tca7CLBnTVtg0Qo7cwR37d1SBYpwAG10IWq0UuTAYerVKY1m.apgxxYU0jYLpeoINUWXlu7nPtL6R2rKOanq_Bv2U517XIvRn3r9oNXXkd4Q0UItn0OTdw2oQ5E.qL3moacNB9QWm4Q2wNgtD7KkHjBc3CYGWZLx3xc27mQsxm2IV6jc57BYZ6CM6xqPk8WQCmDndGW4cNj4HCXs_So8xyJPNt_dKRha81Y3mBh6goCvV98D6TiVRK_QXhdzzj42hZ1pqRfds2sf04V36rgYQXTAlGo3xROxN48opI73fOTsW_vD8IYim9aQvBQVYtOvQNndcuT"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=91012404cff02096';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\/3027681954?__cf_chl_rt_tk=xvBpJ1q7PGg0RrIUFItSEJnW1_ufPrOaWXMM4W9YXi4-1739243372-1.0.1.1-M_M7GG39kxVn_d0Hddte.xskHTVB6cRCANQrnJAywEs" + 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