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-3059624871-gov.caltech-edu.pp.ua/post/3059624871

  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-3059624871-gov.caltech-edu.pp.ua",cType: 'managed',cRay: '90fe07002d7a2d27',cH: 'BM5KURKLWxTUQW7aTcNqFljPeeN4MBX_ai.Mse0ejYM-1739210726-1.2.1.1-rKK7n9xDXoZtVBtXs7EUhNEaod.nanUeLNnvikVTa.XxXsMy3NAa27hRAivUwn.U',cUPMDTk: "\/post\/3059624871?__cf_chl_tk=Mc3xXo0R9tBDHZb71vA8xuhVovjbJsU0LRO1HlTCzLY-1739210726-1.0.1.1-6KqjqStxvH2W3PzsjKqWxJYCr_GGnJFHDBXxs7D7K_0",cFPWv: 'g',cITimeS: '1739210726',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/3059624871?__cf_chl_f_tk=Mc3xXo0R9tBDHZb71vA8xuhVovjbJsU0LRO1HlTCzLY-1739210726-1.0.1.1-6KqjqStxvH2W3PzsjKqWxJYCr_GGnJFHDBXxs7D7K_0",md: "5UdXYkrPppynUxVQoVjoz8WSKQDJWAqvHbQxPm_SAAY-1739210726-1.2.1.1-Vq2EXybyk5f7RCzbOHW0xhNyXdBu4wK50dkt8zgauWBxuYLQyDPUQmf6f6wkzcK7rfN5BOD4XA1oqrn4vXxeeWSp_hXjYjw2LS.NwuvPVq5pqkDl_VI3wDxS1T4XBMToRUQo9g8LWYUQgWnLUsZaWy3u.XC5l8ZmFaDkFPWcr97VZ0tq_kU72bgLnIFcSRZ2jt.JlrTBMYRYEO2WDbSCL_AgdZ8M.1LpRGRyh1d04j9h6H_QxOrxJbr0G7_y_eQxIq8HcPRotSuP0bp7V0abQT6PSgoP3ZIZoNOhMsHb3SRR0LkEg9fZjYCiumC1Xh2g3nr5dRK7q5gbsY4N2EWirsrwHetM0ywpz_goT395m3Mkt_jDM1bUkq5Z5SOdrRSh1PYJU62LLOHiNHj2yQdaUvzsckT7XC70h4fHmZ31NzY5rT0YwMrRMUIBTZh44Jy2w6kIDt5yLp2ZEe0YBPCYi1ws15i8Whw0N1Wo2qOojE4CoWK.DF88cbWtIP_cYNXt3_0kTg4M6O.dFC.u3NJeNUZKj6dV7b1tEz6aAeT13tBcsuNzHJkITBque5PaW_UdQXas6FoqQcc7tOdy_aAZIDJFYNN9NsXbZPYhpjUG41FWb5z.fGl2yXLIya4NgMAIXCdxHHP3iRo.C_rZwPTA3y.L1gBsPEdcIdd6guKFIKM1ux4leiQGGWyGjhlqRNa6HWsjBAZ7ktljud5ggQHF_1aSftUdUF9CMH3lqSffkF7RAuljGAvBpoJZwbM0AjZRlbvhappojjtAwj_5Qq9H7Gp0FUQHA.8DlTDYkrB6.9EL4_rLgrTV0p4f_ZbOOrXT0jjQ9X1nkSSOSPvcZGwRM.g66XFL5.7CBnQ0UaRpuqFzjOxmNETgjDyOHGW.gydaenIT_JIm115BJfMdL9873dSyj_ZeMwmeGqttqBsI1CQrZtboqwq5pN09M_toZh1KoLjnutAenyVWaTVXHGE86v8.EaetDoYCMerNxf9ShnfjzOncKrXoub26ExGwLA0KNg7n4MYPFkmvxGzzPXTiqWta5ge4bRVkYHauHq_2aua7ZxvlKPy9X76nQ1Yd.MaR56zPTzd.2HEPBHmCPJet9.j6k3S1ZHm96f1fEN3_zGbxeJP1vNCAGdDPzWSCZNG2MwCgqYku1GT0_Gus3IxrxXzXwntdpw0la6YKqw_gEXLRnp7zlZEKlGe2Kqt97eUAzReN8nYhy_RupVOvIUsOtxdTyndnE8kw1L4GcWSs2etI_WfoirEm0BE7wDFRxrQBVxnuJZ.FGeSbfsyfRGeHiXOoWFORHzK1FzQw3HTjz3qecjrmQJzLcnGZ3TcurB4ggoi.f4G5U4fZtsRxgwlAxjjn1hCGQ75GQWcQqSN903eCplmwwAtEEqzuihBJmmnPISanFqCR_WkqL6UVcJZ3rX16EotELUF373VR5a6XUx45Zw0th8ucZWLqPUFdee6S1Z6zRulcumwH5wVBiMg9w9GmTMUuIZDeoG.CCeTDtxEZpCcnlCZYb6ypJRsgIv9FSl1yTFOx9MYz4dPFFtJEvy4Z5NyjLwiltB2zDsO71eccvwEpjzYvS8HtZZsuGs8_YfNW5raW1i7a0PIcqHXvr80nzfM0G5JeDX_A1ljSoFjlKohAVDpkMQCwsrqGmVxliVSiqJODbSRXLM4tYyOWX41ecVZG61WhGu0r6R0A9RC_yCpyGiBlLqO3HZcXa1j8YlOV.TqmQY.Cz_6_lc0XzzEByRm437p_QaqOT1ZPfQiOR2DT6qXnxfcnAKdCLIH4Imvso87cfYZiF2mMMoNm5wrt.4gbqwtgKe.sOPwfhmSD7eak108iY4XrbdKjODj.HsI26bHc9Y9fjqhW7Aj0MTH1Ar5Wjqk9ZxrTG3y.aXUJ3KbQtoScCPnNT9hT2qNQK3.gWRrXjIBfTIWXcgLNsvPteutshVv09Mhuv7alpUvll2dph8sWJCb6j9OuiogEYGHZb6d3uEhE43h96xQoVQ.uQYcNoDc28YE.lpwjN7TH_v0bXNJauNTKPBvuOQmNPSJcPArHoT0Mxu6WXYXXr7a5J6daB9snpecBIGKFSLmz12yARyOCdE7WF9Q3L8AnCZvKynvQ0j_vIm_34PuculNyVMFI3ISyTlKb90uww4G3j1bVlxkIZq3gDX42La1XEv0r.moLuHHCP0iM.IhpOjlKppjobvzfsZNknETSyP1821FI8Eojl_uVmNKwpH3_y0usDqe129j8w98UhpnC8A",mdrd: "Y6B9M42z4aQU6Z3epuLrxEk27RuQpLBGm9S.rCCM0o8-1739210726-1.2.1.1-eJXMxlnZ52m.920Nhy.ftgRvhHFlyZIw52G4UdHcNfQUm8cXP6J5ROSaxUe0H99x9kbdhi8Ei_iznkBJ74vEPZjazObL15c4qI9R7ej4LVXEgV.XjQJm_leUA0uQBiyW4H5qvUSXn75CMegsUdg63R2.fiQjGxxa8yfItKAqkS.og2YGbSNWOl6YhMYjMbhPihb9gILJfOdqffnLG43qtrc7FoOkXT6grySV5kjGdS3p6uX3ugyX13Jgz.naMvfRCsaYNXxwAORppUljdCAuVNSblbhGnfbTlseBEyBB0H19W1KesZJJvvNVtP9Wl19xch0Me53uSIW0ddOlmGPYGlcFdGsQHxwL1hsvjFGJOx1Dg9pacYhgKa5lVxcFnDNTNeez92GzV4sErAGSFzRg0TpyPxlt4dA8AVDtR_wI12N80Pf_eLBgj5puMPao9ygPRTLaEIxAd5k9uCG0DGBmC9Ht5jZtfJHLRaTZRUR_a4HjIjJF.HBgQcV5J7b61PW9xQ3paBztiii7bnZF0xptBMRRPTgUfULWDY1uLlFROSbcT8.MxaeY5ISgFx.4sFFEZyeDBMOpvFL8PTaaBfTj.kwvplymNrkSSglB75TfNabzBNU0OmtfEfSY9vjoPiN2oUbqoUu13VHkZughrdalXFRZYy.huHm291PPc2I7W3Tbh4.HAWPanodfeEzSMkabkPVTwvuqkljZaiDcu9a9DZa9AalrmfO20ZVUz3HrYweRpgj9QJv4m9fPacPkOtKb9OAkaWqMFqa3XjwOTenB2wV3MAJOKkTWvke4zW9pDpfXYoeDOIbekE5s3IyZUWtIVN3e7LwJvcFs6YovOw_cGvHAPasASjPRAX76KIgogml6EZv9hU0TuLEOjQALLUPBSSSjf_sV1iSb8Vz6FTC671AKFRUwa3mXrwY2xqek1P96gAhcuUp5mtd2SjtPLQovA0uFPETMkx5an0_m.RI6Zc6xi9Txa3phr4vEy9W5hI900.tP0fnzVs5B76aU8YiPKnZuhmDo0NvQ3xvnvrjEgBnEzhxKvl5dNfWt5B8yTZXMB1ctajSs.Eu4B0WtOqWLnlQbKTD_9XRFi3GIAANIG2B9g78vzFROPkrg9vSF.P9_18mgQEajW3ezYqBmO1EOlIXkgAcAK5yl3SNdwTUDSphwgQZK.HFa3_KapVrSUadD17zmT1qCT4xnpS9.raHd7dHI9ZveZD07xaedzjuOcx5j7ieORtAjGR0NDVB6o0VMkLIZTVTt6bp5JjaXhopll1r4qOmppipOUGOyCgTAMDtJqUbyx.JaEjV6lpcn5hD7v80m_E5G52_h.q.ZYz7zuGOZjND41BypDXOjImX.DcJh97jzbAmVaA0ZSLurFs5QxJ6_QtEReVmO8RRHdQ9B3524ZmYWz5b4Y9LjhdxqIp80xiUvZVwOObVTuqi2_RzjLsLIijLtVaIq5lqy0UyAbzxo1yTLZxBT_N2kN_BO.X0ER6OjnbVdNY3Hgn1xW.sCL5dLxp8t3rNVjwkG9iZjB7TGdNZtd8KsZiyMpuj0WV9LcSphH8x6roYoE6u8Jf22rrc_taIrDlNmU9oLy.iUXu9H_GG3uIPmxs1K6cZmVuM2GGG57JMlTWnk0DOqpNXMxT2vHRFV_8_s_d0o9IPq2QrzSMknadcW8GkjGec3lnG.152xT8G3YkMbY3ziAh29.yLg1fYJrs3alfAbVYmO44X1MRbZYVN3ZKTt6bYADRvkxslnvTdD09ym.W0ghpC65Ktla2.dEf7siTmqhNYIzP6d8qgiDDnKWXUySwAxNK1ktOqd2IO3ITaIIcC0TuzN9TF4ZEhaY3KsIvhgI102"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=90fe07002d7a2d27';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\/3059624871?__cf_chl_rt_tk=Mc3xXo0R9tBDHZb71vA8xuhVovjbJsU0LRO1HlTCzLY-1739210726-1.0.1.1-6KqjqStxvH2W3PzsjKqWxJYCr_GGnJFHDBXxs7D7K_0" + 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