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-5784902163-gov.caltech-edu.pp.ua/post/512217822285

  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-5784902163-gov.caltech-edu.pp.ua",cType: 'managed',cRay: '90ff203928c63b36',cH: 'gcj8DFFwiUtxXK8gGJ4.zcaHlZQp1.ufKnphoOlp7s4-1739222245-1.2.1.1-id6m45jjnZwhwWLaKMUBbTFNICPbcTtUlWAnBcnW8ryDJrsU4ME_UbdgWV4uxDOd',cUPMDTk: "\/post\/512217822285?__cf_chl_tk=xmmKS7fjFJ5VJ9DIEAiLeiTEeAA_yfb0PODa_1TkCPo-1739222245-1.0.1.1-DPZEwx0ILa_WqJ45AR8ykTwQdVgV87ZSkCMurelaXAM",cFPWv: 'g',cITimeS: '1739222245',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/512217822285?__cf_chl_f_tk=xmmKS7fjFJ5VJ9DIEAiLeiTEeAA_yfb0PODa_1TkCPo-1739222245-1.0.1.1-DPZEwx0ILa_WqJ45AR8ykTwQdVgV87ZSkCMurelaXAM",md: "7aRVwNt8ThFGAUbxxyGCOzuK7R_6ER3RbT_hbbrVGXQ-1739222245-1.2.1.1-bSR1Fai10qZ0lBRp26EE6rM8LPoU8fwCGmFU_VLMPMiJVh4_G9mGp9pQwUArHugCccVn0PHoOZky.lvKeAsQX8EaqnJqn5XeTHzUUreG4UCnXqcZb6qo0dz0IPKkdUIdcwPw8n.N5YlyMVR7rqyWYEuSy3hbDTN17ZQAiD2GJRl1Q9X7pLuYkbTYxNV046s8YMi.hTJqmEUod1z3a2FfKInmfrH17Z8f0iqFnvDd8XWtdkAXocd0xndLvDmOMaqAgPiqsul0VhdE9ZXi9cGAEnD7Id0LNTuCN66zIh1CfNUz48nk8iFwb0aN6a1PIso2CeFmSslzHFsgmrKLwpcK0btmo6DwpS7V48Q5WrB2H2P0v9mw7VMJxYmVQjWHh_yMCd89.tqO5Z8vap4gbDqnJKFFK1Y2DvaLdRh4jGtXf6KfUpQc969CqvhxXmi3s.JLabUYt.0cRWAEE.kNfMF20zxjHJ9CXkasnktZFnRsDMOkfcHHmZNOY63A80owdr7klODnFuGf_CXNSnQfAAnXu6stgnJHJLizwwaX34uzqXcUj3pG8na9fh9VxQ_PKKHIDfNmoP0jgOb45JSxiFmnY3fkcjXdaQPXudRwc19YmzGkNlWp965wWZAGXRGKDo3VFJxj6.1Ix.l5cmXPCEzlkyYBacnYMF7UfwXc3Y0LNXzaF_eKr4oPGeFyMGceT9bWkyr0lx84_yqeiUa4pzOtxIZ8TS_lUbSAsZ_ZFNv36BCoVUBQkDdf.R4szsgpCs_0F5J6CqRsccKvSya0cE6SXLRwe.gIwxkzHPb3wPjmvUkLxmEUCwS2BbY2llNARihKYJ8LXsjicNAILXi2iYNuE_F5Eq.6Ku.V4NCA1z_4GGQGPcPgLePRGKGuQExwwCND_eY5zObAvzD44nXPTqok4ZU66hEBUTWaHlqMXgPgATzAliU1uFoXsF3qFPs8pm3Y6RZ3nWFSGEWuWnrAAUEOqDR3L7es2lEilRRn6BHsq4El55QXVyKILQH4lSYVChKTGWZUkgL96c2Nitg1KapsjWNdPinpnQDb0nnc2faGcvi49g7.206COCDlUkgpQbqLOX5784vZOcSDqy2aQzmXRksqqCWB8HBDXRb5g7ycBKZNNhn5KsK72N5yp53FIEwNeyeXxg3mHnE1SZxcmEs26w235nIDPNY5JZ8D5StA71NuCq2m_A1eIIC3GYWV8eMvfEXlvn.345UgaZAEIWSOBCbezBublu0un2LoYZh5tpfnaH8bYenU78SrNmJDWZ3MIWSQArqGqNTb96TieEDlkfy5ngljzhSkr7BOuAJGDP7S3P.au.r9DJP6Kn0C.W2JiyNHFf.bgSm0rL9vTPClZlobsidimKfZuYMRbcyqBbk8aWhCcr7i.jkd.yOQCKcbLVEAIzAQNtm_ODVNdZwn6DTMfCHLrQYcBLf0_Phg4VmsSR_qIevrfRlUFZIyDazHBb57WyEAG1Uizo24S0ttJd2UMCPyik4sFhDCeBGu4KciCJWFmoenvKaS5waCe92k1ILlFi63yvq5RhRGQNo.zX.S6w46Njrlr8U7MxuvpiBnAEfbNVkbOGWeLtjmteAWsz08Jo.hGr7FsN4pGE1D.HpXUy3PBkZp68xgfR3nTbvDujOrnF0IN_0R.x6EvbztGrI_mzObb__wxfGwktBF21Ta06bWhqc3_Gv4FHnYYisv_WB4bm8Ojny077EmtQW0cnVUwxM.32hCTZCqAWnxBLb8ZGYX3z8UPAn_tB6UVQ5hgRDx8Ia2QrpBBuM9D82q3C5Sf.5lYSqkVxsrhw7DgiW7fllOmJnSLIi52au4Xn_cs9RPgr_8UzZTiqGdLHxfHRwpnUQ9gj.cUh0BQNyHSxnvT.fReyUPWPqkwFp37PPEvUMNUHae9aFarESUedQRWewTyCrAoCCPcKAumhoj5ANwZtTXvw8qA2_djP0o8ON0tv8BqHYcDBwKjz0A6i8cTrxAhZM_xgLUAhuz3zmVj8X_wpzThpWSvRbOGlMYPb.LeaQ0UJYzTz29I4rQHwyrKpZZaDSYKWlbwBHdEOipU0.D6VdAAT8QTjfJGG5a.Z.ZgwA0RdOgztygpSQ5bjIMm4cVkzalLplIOUPMviNIfGNj4asDOqWPXpLPIhFjHzxOofkLdTkWuVI8Ib1VWsZAHkDpuSd2TyRP_ts.FspUWRQAqc6BeEmYfabbx2Ua2i5WIZLsCd4LstCLgscpPWFxbQmhQoIJJAVZch.d701WzA",mdrd: "Y3QhfokovV_3naAlYaH8u0IUFA9s9mKlKuC5wNHSq78-1739222245-1.2.1.1-cilQJqpAPZpqadGL4LRopcWKtIwAYWpbHfcwmVkyqTUrWhFRJAgZB7uOaK_oWB6.VIXthazkuWvA78ieVI35f3UElxcazgMdlx1Ll5j8ei_2TsGgbOBsAX_ZEP3j4Xy2VUS7Z9MZiZZ8fNSzQ4Yd12kpXyzmoxS9rxesZzVt8pkEQ91EYHedn0J6MtiJRGhbrzfyRU9NVG1nl5L17pW3i8baj9lie3hyVaZvqhCfJX.X8L1cEIz5Dh6mORa_.Jt3tb2BQSGtQnKCa5ByPqXf7v8QFIXVVx.zU9BzYwD_EE_W.3Lz.wi6I7su87yXFOZAC4MI.i6Dd4175.9GyZne3N.ZA9ijAszJV1XS0J.eWPrBGFafVck8gMS9hOvduEoOEw9cK4GBX.JuvYkjsgrippzkEhlcCHtg2oUJISOgm.LbiyLchvV3zABxhct1eQwdAAwxF3nHV1nJpg8_OlDumYVQI03ldOTDfRGtgJCwvbwpaZTEZFpeGOhRIf7NmcA6fODzBVmxKhTutQV_Uf4se8rAJhWZSdyHrGhygz8y99qu_J.2qAaa_vOj82jbD.0PuBDier_C6RaWh_a8S_WLPNRoaM8tDTl3Kqq1R3eaZdhD8Ucbb0Yvs259ey7UBoaKYy.tiP4esVXPu1vCRcOraeRmS2Y2mlrXAvoqANsdgoZnv.ILlOW_5p7OJ9iWzUT1128lr8mmXrVdzQysq0Wa4iXOCB3b5bk3Bk58tgY_B7rHwIvRVD6i.uwWi4H8rI3jZYej5QOX6IKUgeFQ98k_x6S_ji5R2rdY4HRb0RWAQDVhL4scPoEHNl5VTi3y_jGJuZGCL1gnWRh260W5x1EpsNIJyfBir0tkG76XfYb2EIjJTSm_nTVZUwsg3kypZ8D.anxZnJIjh2jM9cKqk4YxyhCSg_E2Jv.qE_i74YHdkNoX7ggHk42wzAikPddVoLiIjKJfIUTiQKenE5KXI4iWdM5dLYTbMw3rTIZuCZefMfBMh.dkmWiQNFYN.GT.s4zlWJMEcjU9RZYr2HU9UdscGJ4xsxHeWXsg_pERhkPeFvhrg4ra7dZ_JQQyvWnDrGKco3IyE.7eakKcJlef3Ij6FLzati4Ajw8aujGD9MBgQGP_inFh5C5p5_FFsA7TKzWvrirubSHA5hasTzqAb5T97ttYFQe2uLmTlgV0XdovK25hU8i1T.3bFKWRB_tC7ODSgneoSzHPI63X9KV95GUqtPJf7ZXGE_aEPOIL0hmFeAfMusk0_ORbElbBIfPav4s3hxLCR06AGZ6xVcDx_WeoRycmgdjnsY5DtzuTnDjc3wBoxIGJEbY7GssFsSv3damwvPJctEo4PGOR3tfA36DKYsWHeoPhHPO5y8LvzYjEeWLpJTlyi5oQqE9eWXqS0KBIGAFN4fFu9CqWMbSthF3uU69eBAVHCN1QlJNWywY1Wjis.6T3lIHrbXbMLUrw09CNDbUbVevXsnicFZWEpdP50Vu1K3tfddrdvhqDdTcvo0yl29fz0ypbrd7mfa6nz11PCBjK8gzyzUC6udFHIWLUUeA4470RLxf35EnmC0mcY7miPbXa40XbNskiJ0rqcxK28thIVFl4VlStxaA7MOPdl531rYoQoNadFSsq8jpTxQ4.RD70Azposk7_632XiE2eZugo5Ogj3zIiAXqefC1YSH3q1hQW1maaUNrK4JeFGbLCyOHyrid3MtWYqcb7br9mp809O7OqoEqa8Sn.JP6lizdN9vXvg1cyIivLRI6wGPZSZX7qr7befXe1fDpnSxWP0b3P9u0H08JV3lJ12U.YvFNQ7A7l2SMMbhdR4TAdJi_OMxOln7eU9PUYugufbrdc"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=90ff203928c63b36';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\/512217822285?__cf_chl_rt_tk=xmmKS7fjFJ5VJ9DIEAiLeiTEeAA_yfb0PODa_1TkCPo-1739222245-1.0.1.1-DPZEwx0ILa_WqJ45AR8ykTwQdVgV87ZSkCMurelaXAM" + 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