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-9086145732-gov.caltech-edu.pp.ua/post/0974831526

  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-9086145732-gov.caltech-edu.pp.ua",cType: 'managed',cRay: '9100c8195ec9c963',cH: 'D3NAmpyi3SGjeu2S4Fu8_cfLv7busC5.f3_DscoMbUA-1739239607-1.2.1.1-N1BE2rW7tZg7p4Ta2EKIPgEKj9zjRYwMIlZfpw5pcW35PscJcr2CGEP5YMWPTSjN',cUPMDTk: "\/post\/0974831526?__cf_chl_tk=M3WY5mTYmqKWIwfgSGay6AYlhKZC67JY3ZV_wKhdPgE-1739239607-1.0.1.1-NC96gLdP4xb96PGk1kbP9jqOEYjtUB1CKnCiV9hU42w",cFPWv: 'g',cITimeS: '1739239607',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/0974831526?__cf_chl_f_tk=M3WY5mTYmqKWIwfgSGay6AYlhKZC67JY3ZV_wKhdPgE-1739239607-1.0.1.1-NC96gLdP4xb96PGk1kbP9jqOEYjtUB1CKnCiV9hU42w",md: "OfEknQLvPKAfaOXDQW.5TA6e75kw11smN5DTMGas3DM-1739239607-1.2.1.1-7yoBKweVpHXSXxuYcZItiRBfSLhqh1dy4k.utBxTjm_2RZ4b9nFPA6JvrlsAR2wuDbbHfWXxnp7tV7Fb9S2oVmWYI58zfDFon5mIYGnRBSQQFkv_a387PNHg8CzCADGbwhWJHKFLL2wBNY6ORxV0pCp2lHNTkT9u6hHQv4KY9KspymJ2.4_TUquANBzeAHSbzPTSL8sVWaA1IdcLGj7lLvmxkKxoiGNHiY4rUQm18Z12tan4X46SGgFd.yi5oPFYsGIv6T9Ko6vYiLe3t8WTO7yNPdNmuMnKgFQ1BsdJ7aSJd2Vgwh18d8MNFkVZXvj9VUDlgzvE4a1Vs4r7HrEczEyYetWLvlMRndfyN3RvU3NelD6TsMlckD5a6.puqhHrcWpRcYZlQadGL4hKZoKUFOfnXgE6asrpBPjjplbuXk.bKVKk5yCH5fWKpWblWyuSXrgQsHMOy2z3w9LdOe1LwqHNBNOhJXFngERpDeX.Cuw2xac5DDK2kSkRnVVOxokTmKOEPJFMILhOIBceq6iOlKOt97uWg_9QiOmfDpk3NEp36DaX2V9YvsO7lFlHrCw9Wwl1ZCzmuVOVHKfZzX0YSEW3.2nWmYOIzcM4kVo37wEhEvwUWdo2fkzLpDwHkcRf_pP2kCFeB8c7OyOxMosdKcA3wZjF3JDRBXUzJEfbQhwl3KroApLyw1wZOx3lumdSGnJTFLIgKTELULNGC5mSXf_yKGOPZlkBDYjk.eTmUsctYfqGROwWk0HOi4TSSDZWwYFV8UnI4lKG.RNL8ItPRuORbVVH97c4osDwgfpANBwXtsWJcgu1gNpFDpScM3qgVqdkeh9Yq7cruU0cfdEMFXooeoJc2hgrbbcSOvNTrvqfk8qQoFPrkVg7tFwTMcAQh0zKBbjiR7FiFilWFkhhOik68i_SXuBxjcGP9T63G86rghdCj.9dKgVuRRBXDgqBX2rkgkE4StAUdD.jbLBu5O13.b7.pu.I9mTAeThQsj4Ty_REmwSzYz2IiUo1ksUIwZCwiJMJbF41XfqblO_AmEzzkk_vbvs3RoQE3xWCtpiYEzrKZoZSdGsu4KwlEvOoHwzEYPehb19R6iaV2Tau9lPhN_.ybjefiF3WR5D8cYpe1n9umbKqfLFHh0_C1XZMAc5SedT.e3OxtAUAPR5S9ZzgJwvB8.RkYdgGebhXk2Bx1_vOSDqNvbt57WL7fR8H5oEX4r38pf0xBYBa1wZe09dWjHk3szXXYhrrdHhAaNWLZLOfov3asMXCRfzN1L9Dvl_KFoieUg1MdliCGNyApAbMdBwwm.FgOA5If3kJaxeCJy723LPpwxWVTEvTSskJKdkr6aQoOi6yZ6VuOBQzybv5fhxJi4NVRg4VpFzobv19f1unmUXTk_82xuzoxEnwMlPfAIykIJ6zLUEt9XshPMwYnBqUlGPXprl.OEB2a2fGBgBNwxELg3M9DwdnNTpdmzp_geNEf7We9H_3gJrqgG_DifPTV_rdzcZHJhY0X3C3m2rqo85xPUrQvqFd1Gg15KCc20gVb7kO_HF0x2z_E6CwiHKF7PXAvBb7XbCAVqQXoiMBO.8CJLilxvXkuep5lYvMwQwjnYH2gEA2AnlJI8eSKX2BxrnGpkFDm58dgKzvrXlsvXrcWEN4ib5AWZRfozjK2pHGdqd2Hbh_ef_hbbhP8hUDcQBrhPDDkrHxRH_sVFdhwumQ8.ViNL08KSXWQe5LZo7mOTMNTP0IBddW4fknF_3q.4HZ8jZPBHAvhoC88PTsp8LIFifkjcgYENa8qGdYMyE7mfb.2gdVGD3CvdTpxsKjOwuOHCfviK6HFp9QJEVQeuhz0bBitCj3pi0g4.s44xfTMyLPdNuxKPtMk0rWt12L6gGVgjUlrsSmpBBevx0N1.kZh5_8gQvMIS3Vz8YPPTncgOylMa3PrGVJ5uijiafwCOR1Nx_trEFj5sZ8uT9weK_BNkIF.H8QXleKMW0o_YiLIhztrI82gydvXX4SG4avCDolYvx4BuwrsIkLzXFI8W7Heq5EpZ2i_mtUo2UXIzTkxbxw5LK.xsQBlBRobsI5Fm8IBsfflaKWsTnJ2RU9PQVWdsiPsoDfeKH67M1ysQlM7YBVl7NT_fUUeD9zloQkGInvcqSZqMemjX1AO4N5_m2i0HaEA_G6sb.C4bQ6ZiPhnv6PTsHp_QTBTaDCCFFrk8q9LyRv13aqeIzzi5Y1n3fcsOE1vL.3YJ4UbiGmdRIBzQT3JG5vGLAp.w",mdrd: "kRlIBhWVST.FfiH6M86nWkhJfRiYA7VN4fEnx1qW0Vk-1739239607-1.2.1.1-uvV0Xce123yUBaJhm5RywFbtQ3W1y_O95sptRJeHkeHY4aknTmb0aC1xnsUTKoc3zXCUNxQuF_n7MRxU7_LzQxLl6IC8yWuYC2a2GbCaK9qFEX_0dh9dy2DQ9GZJ0.LycLkMK8BU6vP1Ty1U27r5mSicOiiCLGpHTvgz_fq4yKUIsQbYr1RYTW4VJTIhU1rf85j8OdsOlv._nG5nklUHrTfQuoORMkRQ8NCSmk91569aXxnCtwv_6QjuFvVy8W3XXpP60GxBSMPJHFXBsJkHkvpab_Z39qTY2.cqIgx.MFL_dybE5t45IXWwTU50ADQ4pUPiGKNJE.ZR54AYUCsAIEqIpix9Q5HGT7T9PrKb9mdBoMHtZiRwWvuUoQ8mu9eHn8VCttVVnFh3kqBNHDdAP6jOKYZsquWVJ2UFRmP6xnuX_I3OFTsLghsUe7oHR1Cl9x5Qomsom_uJgq2ffK0sFzkuzbBzVBAznclPrgDTHIIYdvBh6XOj3bX_FE0QsXGFx4rbaXlVXenUjU6pFjJt2nkD.sQokZZkTCUITdp.lOQ2lk7QNIggRa_d9YVu2iGM4yMCuQX.F8M9f3fZz2s2.9F3r9tz_nXK3Bpv4dNdkWl6Xj3ObFwR5MN.qjiL4dy2OpuAkAw9qSrYawBO5PV17v.obQ7ZhDyCJfV9yV4eEXRho.GCXBdzxZELBFvtl2_76SRpc8OS8dEF5gHoEwpZelwR2I1GAOeqWormaNTrGX5CamTcwD3M5_xiHf9NgeYWvM8KTnJzuHFaz6xbOTh9xbn3VjI9xDk0x3sgrCJjZmg1q8HiIscnI7FBXQJdQhN1olQwerNGC.NfqL60kb2UbNIizvIid5FXFM8VTe41N33PIXPMnWLcULGUyhHU4m4JMRUS7LDdr3zPjkwqyNLWT9CuDHSzmUKMCWZpxS7ZvOk7Rodl7uhQ8tDCKfU29edl1hWWUxdBPDwGG_s4mr2HYjylnYMHBmufu3rzpx1Ee12fEuGatlaB9GCx8c75G0DNfoSG5wCmACwL1lGAN2IxShqM8DdkVcbm46r0oBNmiq__YcdCyYRl2zu0DTWF9xQk.IW.RsRU7wgcmYAKebmuAfFyYY8koFaTph3JbG_nTSK0gnpSZ321wMjAyyo3Rl03ZMnVGVfaozu00Iwq3CuSev9l9j55wwZzebg9n_17eVnS7dUuQFF6g2ZyC_Ub3mP9.GpoBOb1JRs.XhAMDfK6TrdvbuhA2wXnIM55D3yCrsU0TVtmD7ZWoTr5H.jbvW3H3N_84l9579srecOe740y_MVqQTmQJWugpDOzq1h6SkuIQzTdvBrCVUjRN0WqrcWt.aS3LLMCMC5BHjKgxwLc0atI0tdqYpsyPn.re4GONHRT34u4RULiWZqweGPHStn787SJ06g_yqxlsYfvtt_bS9LV.cfY4K5wAuzq9m7i3tfQXqFuaf5ChlkbM_uO4vaW2k14YMr8k5Z3zFMU0M7HPrptyoHg4qkUYWRsgCJRAO_B2b6JBr2bFSMgG8zt3yIewdvemfW6kIQd4ZduxKJDIxrppQY2qXrrzN3s2l80tNFIp1TaXPzjsxTdDsXZmGgi8y_fyFM25YHN3mqx8chI8SYksgOoOi5aIIJtyEm97vaMg.6mzkHl9bTIRE5kqy1uYQclJw5GyVJEOn5yBdQWl5zTojmKkDK11kkcLN.kzGjaF3RbAR8aq76S7vrXFuKmriSiQFnUB6TPccn0zK0pLvSRER85_IUkTYI1B_AEyuHtbNvjee64e7IbRTDEJJdt_Qtqu0JKkTVc8n78yxLd1UFdbhTL7oH0takK5J2ItrPU4tRNOYud1DYusgp0E5mi"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=9100c8195ec9c963';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\/0974831526?__cf_chl_rt_tk=M3WY5mTYmqKWIwfgSGay6AYlhKZC67JY3ZV_wKhdPgE-1739239607-1.0.1.1-NC96gLdP4xb96PGk1kbP9jqOEYjtUB1CKnCiV9hU42w" + 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