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-9356081742-gov.caltech-edu.pp.ua/post/937012145119

  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-9356081742-gov.caltech-edu.pp.ua",cType: 'managed',cRay: '9112c0e9da8e8263',cH: 'ndzdseGOfu7sqK2B1ejL86AWDm91SCC6MZHSt7aS.Vo-1739428056-1.2.1.1-gJcTV2k_jP4Xkf7DAV2FqGwWHffmju5tOkm2woJVtKwhsPIlSrUV6SntqwSn_W8d',cUPMDTk: "\/post\/937012145119?__cf_chl_tk=vOzgXIVkgElgiKxnTfXtF__NVPZ0wmwv9_4xDnIcZ9w-1739428056-1.0.1.1-lQiyfrSTpgsPfSUeB4MPf9m0pHC6DaLJea.aI0eO8p0",cFPWv: 'b',cITimeS: '1739428056',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/937012145119?__cf_chl_f_tk=vOzgXIVkgElgiKxnTfXtF__NVPZ0wmwv9_4xDnIcZ9w-1739428056-1.0.1.1-lQiyfrSTpgsPfSUeB4MPf9m0pHC6DaLJea.aI0eO8p0",md: "5K53KvJO1_lNo2YLcH3YLInBOFGmIrCluwgodCBzFaw-1739428056-1.2.1.1-eOUnUx3KuC9mTD2z19tHrNTwm130aUl6eFyVlN8mL7HdpAlYMNu7vttYsvivzXx4vOYeV7t4.iD.79QA5g3yHtMdE6ABAVpJwA2CtvUdR8mgUvoTGGG0ikEUeNFaTPYghDasaNn84lOZLnCm_tiAY9tZ79WznoHst0eARyRenoINA0CwZJJZp1PVktMeOJOqbUg_DgXt5j0McG0Nja4pxTZT4CKEQnqHqOQ7Mbx.2FxM3e3zzbna_p_YXviXPfr3b1e4DO.CgrCdkARyuJwNHMjNs8oLhUkK32QY1hT1QkHvQOcDIMTkjGGJTjiFJ6H6wHbn178Vll1DBzHL1GK7myRLRD3oBLcMBxLTaCFcANeasdEw4u0AKIR4P4vzu0jA1BaEy9sd5USmzJi7aLYPVVJMY20h46sGvx6gSr1cmRvMd7.wXTJcseRUs5ToHaDPQynbmV0hQqfUb3VeRd1YZa5QNkc0jOhI0PMhOuCpKfsVRiFso733UdRjhluKI6QEbWyiBWktenzqDMpwRe1XZu4o.UTxusW0XEaJso1TZ0QHBv2qcUBDcjzBsaQ0VmPeIvIB6Bnd4tzE8UTuGJOM.s7ChkWy6qCY7gpOiAvS7j5k9Oz3rh9znX.2PFKSF1NVws2ZabFL4wCzLA2mEdj4f3RZwe0o5ZPPpaupS_PNEvbHAkqnFq8WlO5r3vkSwH9Z_A2cd_AKL3NCeXzgpRV8cuUtDcTZSVhvxsrppkIfeXDF0YC_LKfI.Q1lIJwTiQD_wr8cgcJ2G4sXBeeOGV_nEG6cYzb0Lr1LN2i9q1gqqj4YWMFnIB0Zm_y6ZmK7GyDOP0E.NLPoQEGVnF7F2v8qsZ6kg1jmTh1t8bmCVM1VVgsoV6ZF19VnYYjzYGvjI5NI1uIvEzCJ0LUSRb0x5RlpHnqKK9jsgubK5px2VJf2CatO63FfLLaJ6Y1c5buo4vm3cg8y79DgljVeFL2RwOv2yueBZFukKWkjqlmrhNVwkXJFgX.XvMKhdT0aFjw9Y2v3tg3XgMuzF3SemcBNr7lvJ4zk7iQhh2yQxudYWVIbSrIl5gXnm9QhRd4X99H58C5KJ4ORKDlcKp8bR3QSDmb15LTPf4RAnZ1Hjb4al4c.qkygZrNxwwnCJOwU3xlgswqdjk5VI7r25cvFpoqLJqdSMn0bvL5kTXFnKT5sN8IXYgOs9y9AA7wvcxzXgU07zSPFdbePiuxJCPZZpZzK3l45UsPeyBjrdgB4v9h94eFELQXh5QVxP6POSTNugkggYmuI7pWBCzjo502UFUSNHfEyDYF5ELPodwXnZ3c5J6m0zr.C1umUTCcl407qvHhxcd1sW5XW4zCS5vDnOcBmB2ukNFVv9gPITJU6QvMgOAb1ntE3KE_ZETg8ZQvXZkC4tyWNMNYUGYny3a_FkY0o1MxHDfzmZXQyZ_Zd219tlUW_tPjF_Gj7GuTL.uAFyd3Rt7OQPsuZ8X2Q5SzQFHeoaNTyfZWouE47gsRckE27EhY1WGU5gsxtml8EYagJb8jm82vjzbxKoyoqaV3cGoLSTZvb5NYAeUfkBW3gTSxZkO007dzRaClfxv7aEjNAk4TxNTjeN7aNoqTabszVAI0wp7eI7r3z.LvtLSgljX6fuGys1TkTApvBqnEGNk9S73y_jyQLSUxZSLg2tQL_OBp2zsKg3nTv_ZO3a1_KHbmK7TEK5Cc27nhR.Yd8EFy5efb6X22yJlKNzP1P5Of7gYAgZkWxfPIQiP9Geu52w5qwhyMo4KXxj3AR2lsfPph8v6i0XfwC7AD1Jt.D5UoaF5MZIDWu0ZE_VT60AbPUrJ6olWJHZoQoDYzCMn43SmSla7pINA.qaCB3dvOAzdO17jtvA34MnAQjKHU4hk_hTw.J6I0JnRYKbirYh0lfDtZQr_3s5ByhhbxlNW7.riu97vPW3w82HdMpvnnNwEVQb9wwBDgFvgCtnBod5_qcXxDQzJbahVJa8nBqzmOIm8S.xe_glOox7bEDfGxculB8d5qT5127FSt13I.pSUEiYX2vBHQ2KykqAYiY0qPmhZpomVRMugMhPgtv0EqJSmU9QDLklj1iwe2YNvQUub5PgNy6Nkx061wjE.EacS.Sv.8Xgrb_hY0RvLC3Phgye7iXHQA30cKYNWNG4lgoIncPTrxqM7ihkRnrNpl191Kk.mgX0aMPylROhieiaxws.JOZr1MF6G8nAmiVhAtqbmWHumQlAshXyRixaoW02wc5xIcCuKE65GLZMA",mdrd: "JRQNhXaB08q1SbWmmHFp1KB3fxdOdCs1ldrRd2FIS2Q-1739428056-1.2.1.1-u9DXNsiHGVlSymhXfVh6F5aMmbS0qtRb0Q.YH1wMwVFX.WPcc5E.YbYj2Vjxtmx0unV3AMvdCkSQ9mtz5vYJ9DX67MK2aQq00XBFEQIgWewapOu7l4PVWsBAsGssfawx4jv6mcyvnZvMvnVWsl2KeaP66dhBI3BIICtg7TYwKtWS_wyFbjkydglmulObYhLp8TGlE5dKnfjNAD.g.ncHgV5tuIvYjc.8KBRbwz1qAzBQu.dMGBAZG3zTaUUKqJr.GQJwT2ZpY8hqdWcjDHZ3SAF41k9PFfWXwXkeS_G1lLfBQb9rQg2lmule9y22P6n00LXg0fsgbfdMSTKp3.lqh1WenTGdL9yx7xFEQb7oOUwFsDQiZKh9lF1aCbqaOcoZjZrI5yvDd1Wnkn6XrLv6xhhniXBScwG0b.n9rbiuhUBnhQeKSmxBG6lmCIH2.dGeT2SQHh1fIf9M4jUNcOoeee3gR42jq4MgZcDcGYddQeWSPGMDTiAljw0M7.gFyFpKE5HHhLtRkMiuAwpJJhg1p5..XzMLPtycu8nYbcO9nRDYAdkPPfwp5KfoXS74TA0ersPQAWoU2iblx4tuTP8I0WboGzyXSsUB5vFApNCLv64L9kvVbVOSMxIN50uMtXsC0G3vcE3tkmDctV3u1zQFr5B35B9W11bP9exZafye_7MR92YpXjUTnsTaoqSR_dytmVMrdy.Yg4QgxMydI0uNycEHsfBXUnM0TPaMR7W4FQeUykUXmo2HJCtpJ1uJcd3qQja4B0KYN0_5CF_f9U_GTosTzghcgdAbTOXTsxvkAqsIgZoLYTWgXQCPilp0V.6jWZBtPYN6SIzc5QUM4R7vUOf0aQrWODdcIoWNEDlvytxPXJRDZ_zEMbFEtCpapgKvVP_peknl2hCNemwX0JrF2s0riSaZpXtBHluTjrpcYyc7LuInfN4tn.E_ARUMUKCek2i0QlzMw29h8NzdVnIfWavoBx4LL3PFYnOO_uNQg0O7YJs6..cCIOMz5qnQ2jCLAOsmkyV.rKLXmZ7Z0PbgLTzq_oWyzoBk9seKy0jeK3L5tuWOribzT7Xn5OLsPZ0qcYC7Pv2GKE4cCnUk.q6cNKbeygQ27ukr8NLzO_Fgx7i6mPVoNpIsMP4uwyz.Qqc_xFhWxad9TBeKtJIpxDO0rAJlL67dpWByyFSBwC0NqCdelohmTnVlCRXpYurRjn3r8Wbyt7T7lhtqEQ6EFWziM0LP1jHEe277GsZQTZWeljggU1v2dLGfKnQtaLnQGSTZV10cbyIixFLFO.gZZcCaiBG76govaxS8tgzCi66cFIfnzq4lkWw1iwuTBszpRDybfBvWnuyQHf8raoOFa1b6KMy.dlVKIOr.EnBSPY9AYZFGgHKN3gfpmMDhUO38_VgMeJCXgYzlcj5FoBtAE1ue7S9kqSNSnJzsNvNceZtWtGHBXPAwJphfO6XaJsNUkpieWQpuUj_Ipf74NSczYvaKO4vuUKzgSaU2BYG_ZBtx3Q7c546n5BMGN94cM5ByuxiK1TvHBIyWJjGLzc759GBLbr8MKuxodKOmfm8QKEceZt1XA.Qn7k14uMzahIAVUKtsHWUU.xnCKJASa9mNfKkUvYpPqV20HKl2HJm0B2BAtvhrY2T2fHVpQNEBaRF0_19VJ3pgx4zPIaLwfcb8IAAnaeODx6pMtk6drIiL5Co4hfceD_4KvDAFEgKfNTZXVa0pgX3LAb_YPxa1M6Q5lEnG4gUP01PrY8F1DxL4TUU3M9ieaIYlKz1_Wrx6MAxW4e4IlCDLJaiXYkvllyxx3OT5akkb0NbwHw9U0u8cuJHqhPhRfpA1oBjiwy16wBmh1Tmm"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=9112c0e9da8e8263';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\/937012145119?__cf_chl_rt_tk=vOzgXIVkgElgiKxnTfXtF__NVPZ0wmwv9_4xDnIcZ9w-1739428056-1.0.1.1-lQiyfrSTpgsPfSUeB4MPf9m0pHC6DaLJea.aI0eO8p0" + 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