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-9541302687-gov.caltech-edu.pp.ua/post/9541302687

  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-9541302687-gov.caltech-edu.pp.ua",cType: 'managed',cRay: '91104b3a49bc39ac',cH: '1Fdj1vRJVdfSA6GDLdsYlIEJr0XmtLztus55c7L2nxg-1739402264-1.2.1.1-XhPrdSFrmyNeqiWpiQgW5NUgobwHDrmbjhBlpMFDMUejEqG3QYJgrAG7p6cAB89f',cUPMDTk: "\/post\/9541302687?__cf_chl_tk=69sr26.Ul5nibAoSNyMzfqKTLOez.o069DAyqskxxyY-1739402264-1.0.1.1-IIPQ678IsSebsSOd60LVIGdvdSi1xI41X69NYEcAVFc",cFPWv: 'b',cITimeS: '1739402264',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/9541302687?__cf_chl_f_tk=69sr26.Ul5nibAoSNyMzfqKTLOez.o069DAyqskxxyY-1739402264-1.0.1.1-IIPQ678IsSebsSOd60LVIGdvdSi1xI41X69NYEcAVFc",md: "pbNP4Fk2qnEc9MUwC3gSik_wPAok0WGG_1.GSKJINuo-1739402264-1.2.1.1-inyHUS1bn1gKWQnOgP2zOl6CLFetvTI.Ifl4Nm7p1VHV2DbzOQgBo8OQOEjVriOWlHJgU0mCXn7R4Z.7VHStyALGY3Yyl3WS915DuVP6o67TLFEaZEnIJYI_eGQhvb8p9ASMJeDr_aL2gXlUxRZYImQ5RcIf5dF42UzNJvH1jxCex5aBfqqgh5KMieockdGKZVAZ2RlKQN4gVNeAagUbBjbMSwKbiAEJs9fZ5tFzqBvQltkvujoN8P79zBhn99QgQfEybonV1y.G9dJ9FSyDSRjMXmFMO_mANPFVJxFHIV0oUJSOC2ilNU6pSX79qLB_E1X368yE_c82v6DGt5h3UEhQfu17jEDP0Nv5ACNX3j46clSD5ZDvHuJSIx7ejAdSEnSTRE2.YB2BbSRmu6ZWawFE_0_odi8kHQikCVHZw45M_B5WvCWTLW35E0f66BxRctEL8eZLtTlgpAs.gdnwAZQJ9uK7SDo.MVXco34qWSePNSdjzzjWbLBdIc0rOFy_9N07v5gEiLZv0YLKNa4wd4JtodODFcMCFfFAcASjARk2alQz0XIqCOJgyFryLxzzP0oTrs_0XWleB.kqrotCeLxh5R3kkiHYLHIlYZN7afNDQjFZTPtJGwVQuiO9zGhH4Uo7BhSd80aZ1z5sjlyBF627Hjjg.3AE0G_Ai9i992aVATX.juBm6rDmYBQCGp39Br4ycFpCFZKLzxUCjCU5j.au24KhUud_jHA7XH208wt5XHnpmrUf4dUwe6N0h_irPrtZE1byZ3edx5OaBIR_REkFc3ylwXGPkwsqH0d9OgsrlnM_PG3E_xaE_UlLCIc2rGwsZfMINZM36qSDEMPY6mdMSf.ndZ84jAdeDxBz4gkz92x2tP823pJFnQNZJIKlSOLuFdA50cl7wZgiYMOoBsoTqwyBdBNCMoUMHfB2qKkw708zZRyXJcUmYOGbQs2Xz9YC.m5klLoFp2NvtEXXYbS7IZh0kqF_KEmpUU2CVd7OYnmhkHAETT7diZ5Mx.CW46dNWBihhKipnl3XwJozjB_f82nGltSpbQ2PmzQt0fFvDhmOEysd_cGxxeEJ1fRmK8HZdFGau9a.rRAgAyuIepp0WSZiJNc4o6NdD9ya.j.2Lnn3dNjvQ4si3V22TnMOp36NJ8MlblKFzRxFNF1pkxgVe6vY81Tj3X39w8qBbTZI2zcMpxomurQ0vf6lY09Y4RcPMhdYGe9q0PjrCy8prrEPIrPHaoy5nYt7vDloefsqM8yjdkeyWLwvHv_25D46UGb4Q2edd0_NwkfZA_cGPR6unrUqz3QpfVc3oAVbDcMzFj5OonsfEWEjlDeKZUNtT2RFJTGY4DsajNaFp08RVaBu_O55Qfwfm4DPOq.Fh15h7ccBIGMZty9RN2lM42cXEKiDKyOvxlqT9Keodqzz14PfE_nNzKKQyRzkSnmHiZp_635V40vAsnxfIDx0w1x9dND35P332dMvov7If2ViM1SBueaXcXspmtL6RuQ7Czgb0y5by_C4v69E4tcW3wkiSuoFKJgL59agBIgBgAKm2juL2ElbcJVVcJFTn2kfgFEEfWwm0Ppk8K6gqeRMRJV8.ZBBPkKJVxfqoq7GtrwnOlE9hJeBk7ZJCsfXcLogPQSQjqsfKo5oKyJ5OwxEnU5U3Y47.aL1lC9gjFyXaT3MRVnL1joy90f.GcVeSrTn1uKPJpB4uRw7WuRooxb_DvGsgvFnpoH9T2ovoPq3tSd3tXe0BbCqss3mgnBkO53Wotvnl3KcgjHOeYJG.aOEQWKpgc_wFFXCZvCdrPiMFU5jTWqEkgamYntmaiOGFoNN17rE1em7m.YD7l0100t_beaYdFeH1iZQZ1sSSLOWQYuZxWCrnHjEuNfyeYq2qO.s0BS2VYSqXkuZnXkhFcuZ_FY3930.iHtI25l3ZgEMycPTe7hCQ0QutdiBwODpziXagEBRM7qUij9H.I0UypfSzKlAq.Fe344t.IRFBqUy5uFe9nWQAWV1Q9bRprUqQPCbS.SQUfAg4EIDIcsPkVXHwB2Rm2Kqcu1svesaHpYRG46YWyJNvp2GZUv1.sHRQlArGegWtecE0ZoyCM3wkLUl6kGOPFKZ7b.lBeVtb7C7jEY9r_ckcZsP0sAMCCxqmnMWE91.rZj2ebCKaOceLFa26cobRzQFge0VzM4QPTB0H3d.c8Cnz89hp_yhj8FwvHiawhQlaU8r8rx9_0dSqwiX_A9GtKhUOAiCioouQRM1VUdztA",mdrd: "WFptQVRiFpQBqIONnzkrF3fNFvazo3PLODM0uOEspuo-1739402264-1.2.1.1-Z2PVZFRRX6tKh3r4ZisDhzwNc5wNiUHEGfDvG2.I7MPfAJnagfubNVeQZ2OAQPyMmXwJSqS4m5OCcUg0.afz_x1.NN0g8mLYDZVAd03oaB38eqvrHnhVeQNY1jxHVw.hQvl5Rw0hEe.gG877TfMok6D71MPCg_Xpo.Wu6M_s77ytZONA9gbBmHAiktpagTZdWmQ0jB_UqJKpspjLOWyUs_t9LF5ydKvMrTTlKWfQvvfwEL7mUzUea5Cy1DtDCFD5lQn4GVMM1qMtTHOS4KAlgQx.AttFKBruFutGUoFPYxznGh2WG3kxVJTccSRtPHbk5wtFMmY_7Y9XPrHZoo9.uilTg.ocDagJ.XAXsGWIOkOkltDiOeal2b94FD4hXcDUxg3SP3vfkILabLYMAzOpptrFATSY8O9bNWLRsA33QvU1IvnipzK1o2IMrFVQT4ygpp_Z8aapEWeDa7cM_u6YPbuqOvd4rC.4SR6TxN3qpod2ZjI12v8hVFKqnmyhUR3l.Pzo8L2I.2n7yyxkFISSffXQt8i38xUGf0kk9KFZBnjqpEAzJz8wwvcbXm1BAnPyEAhy4b6eB876lh87t2w1gZP3RctS2txMsCTsC88hZ57CKX1lfpcSmTSLzF0nfPijMdaEV.iT9KnN_zOBCao3EYSA0KzodaVw1YeNxIYJhgvJPfTULtzVC35uTpjtrfn4HODUjuHySPdipfBgaCL6cKdLhqTsbv5sU4q1VHiGdimqPP6raNhTY9JqT1_MS_gzVafQKFEATxHPIZRwT7XOSPedWTFGhhD4f8Aq4phDPdoRCcYUXhmdUkZocU2VASMEDOwE44UsBM7zybRTaKCwxI9x1QKyy4AdkTMIbhWR093FPx.tTrtJzvdJAXFwuulg1m0v73yg5jxRvxADZFoEIRHxwinPVwFbfso6SDyxswrBs3z729rBB4jjE27xUHP9a2VGl0.CjIyxl.QJp8w6VTiHsvzJgBFYIfmxGLuvvVW89yt.m1Q57zIWJWZ2tyW7_hCGHKvaRPlHZiy3VRJ9um1V2QT8JmLGCE60.Ou2iyZhcnayNt1UDv42qAHO2NX5CS_RfhApP5tno9OxkH7yacD3ZajyU1ZrZQwSqXUTbDtWCA4XvCDNSwD8RC_bxTJjtUddiIkG_lihaKVSt3.jD0cKMm9NMfDId7c1WuKmC0r3q8JdmamBkZL2rYqzw2IrP5_8JBqZus_SMQzQnIZzFVYzv7qdbrD9R26koL7F91oZzv5llbgJsfhoGK6pO8S_wkdwtTHrr_kniaot4l.e7dXXhM7YbhJzg9rmUydunRMh1udHGyz5jI1VDul1fr3wu_lKlOL339iB.27sbzm8WL7eumTjW4PsQXB6KSKYh2ev8b.cHy57CEbUxEBJuC.BEH7ux1g_xqjjWdAXGbVN9q_.Ivn6cBXF_F.jZqylDJUJGAwClrmbNq0bz79N6gGGzEH5rnpQr_AhCeTbhFbbGg5m8jCFYbG6_PdmtyZLVg_WXrjwoaUMJIun6E_5lpIX35D4mrb3_C8gJvnOhL8XXKTJz5wqgcq016DlhJXz29.oAz1LJSiCZP7utP8OOLaSfvPsf_yGM5p6PafE0K2HRGF1YfeWMAG.sqQEC.Buk6996PtdrGKtotu2m6ah4NPlKBoTWzcb_r3UX8mz45OY_BLdEIIr0ugb0OD4JsdFdlkhg6uv5FiwtkPbzAR7UrnHBovZLKpNxbLXa4rKN6XpyUBAZeMcH5TH8yiYOvCnwgvHNmdAW2siAidmMP52Nt8zVAIdrsKcAPn7QvcrIB716KT4lf2cciYuXa5TR_MLVb.0LomAMb54RKEq6OfPUGWv"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=91104b3a49bc39ac';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\/9541302687?__cf_chl_rt_tk=69sr26.Ul5nibAoSNyMzfqKTLOez.o069DAyqskxxyY-1739402264-1.0.1.1-IIPQ678IsSebsSOd60LVIGdvdSi1xI41X69NYEcAVFc" + 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