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-2094673158-gov.caltech-edu.pp.ua/post/782674871760

  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-2094673158-gov.caltech-edu.pp.ua",cType: 'managed',cRay: '9101169dca713adb',cH: 'kchKjBgNiC_kDxzsE7EUK9FlQI2M_2GgLwdvCVoI_kw-1739242823-1.2.1.1-9_R_baBB_3A8SIaNBCmscOddj7ABiI3NIQeVdWlx4ejh.Zq0ZcLbpxgaxvyjISUc',cUPMDTk: "\/post\/782674871760?__cf_chl_tk=znkpvHsKeDnKyH9RtEV91MN_aCuWH5.yj7IRoz9wa_Y-1739242823-1.0.1.1-1vZwHLjAqRpvD3yD91Hj9AySeGz71ixDrexAC2noPAM",cFPWv: 'g',cITimeS: '1739242823',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/782674871760?__cf_chl_f_tk=znkpvHsKeDnKyH9RtEV91MN_aCuWH5.yj7IRoz9wa_Y-1739242823-1.0.1.1-1vZwHLjAqRpvD3yD91Hj9AySeGz71ixDrexAC2noPAM",md: "Dzy57LEia006.5yaymvebdJmUmHQ6qljacQSYyLwP.k-1739242823-1.2.1.1-3dVIGhgw9nMlwC4Sg3po46ddd4AsbabqBkltAmfOJRHsIiRxyn2sd3G3IWxzybeSM2kAel8z6nfnXDilsWLlqu9P58ejALEk4NHwXu0DozR3jQZ9oHmVKXMYU_RHo9mXQiMF.jOHmtzS9fvAzSgKREl6SnRw_6O8WOAdbIclUlwickONYiWOyloN1M5C6bFj7z5stju9K_UQG0m55ZlUtGX18OAS_URtpqpS4YsTozCJm3VDvbuBrMjRU_NwrLOR5JN152PSyGJIniTzwtEqUygWLxx82EQaGEY6lz6Mjj31R06mQ94A8vbOk9vxofyRZAgH.g0FScuE0aTGDpAGFcNkJrXZtqyVuHaupcAIVnuCIaiWcfl4e6rRVCHgJJt5wYw2cQ8FllKRF_jbwhDjWVVpW1l7Wx7hHXS8EUCOF1xBqab4fJUsBCBFOoKVrqmty60BZZD9NFUUKphhSRHXpwwA28xDWVGNXuyDcQZrtd8mrJsUtyfhpu0s4LWS18Wey3uYjroZuwuLnK4MnZBnhstXNcrS3JxZEVDFQ9mjfUApY3Ygvye64x7.fEVKExlqTZccQsK4VoZ2t2psXm6.BnFIJ0MMvnXMLtOJftm_sNmtwfZlz40w6j1skRiluLLbkqeWM0mn7kHF8scdJDEwl_yQTBEN2WUf1H.iJLah2nkLHyQPge_X033q26nq4zhvdHKeTvrkqmEtHQW8qqC3BBF1peSmgwa8M0l3__mUCF_1jzzThAZqrTmVmbsUfkW0BwzoN4mRrs.iCZPXUSVlWjji2jQ.lPFa2zcBO5UCDPBMQqXxSMI6EUcGTX1ZVBWIltxTqswv3wqbbJMs5ci9mSnrhQFNkaLTA2ED2IROmuPaYHvywH0Uj_6GBqLI7DZDeKG0NoVFEGzWClSRS1PasN3ouxTe4Xhzb9loTvVvLR9cXHp_ity2Ym_LBL0UEDpw8FnhjyY_.4fdYqk277QVh.CNIAtmqawZm04CkfMae9zzglutbkCfFZywhUcnhrGou_fG4.sZsWXVWjh7wZNFuj5L0AzlaIuQwpl3LBcwpZJyXuIbJhypYHypkBkTtRckjcWaWbhiXtR0W3mHUADoMbeP8Jv4rH7I1Wwvc1fonM4gTFcad2eYnP4c1janqS3jY9aDK.nWcizVhYRAhkMQHdQMsnRAqROI5wT9Bg8a6dxeKneRXvu.U4I59n3ukx.op7oTD.CzAu.7RwxoTYZfq.UmKB2kkHQ1FJnH3TSPWq.pKbqL9QNR.axDNvoEkdoStBxmayDE5oxz7_xX.2K9SbxBCcsb8.WW38e8xnSUElTCfnjSL2ITaK9df5CCmTAdJIlOrvbhD9529EccJHIGfweQ56iFwaVsNsEEwTHV7rXDbQgH_IgroUVPjhm4fWw5OvpDdYK1S87PBuUlwLDLyWNujAX6d7iZhwxSMfaYyNMQqVk5WIa5Si.Md5U5jHi5EjnKBXt7xQCxLxo6UxLKaHmQD1CIXeORclJgTcwtJ6V6bhu3hH_7E.btzWnH45TNKHwxllXUT5ceJ_nflvZEeYMgcaRGu2_7cb1BpFmm2TPD000SEpPY8FHvy3_osm3NJQrPj2vRFiSAovfn1HvUUSO.jFDhI_QlV6HxKHWCPwRRlWrzOd7D3ipguLZwagYYskBkrhLZWAu34V4j.KCdQy_Egv3QzBIonTgnO_KOS4y5v1bGzzf6dQCDLLxFoikbpoh8ZbNi.ksZF7PDpcv.o_aNTfnPvONdFEcgc34zmBlNyO.MFj4z3RU3VvRSEpWU70DFaXUERFB5ucHxJpxgCiFewrl56G7NGag0NaFDrGxe1l41UgnAMLqF61zlU4B.4iWTpf8z0f7UVqwmQN.O0tK2WYd4CfjXFcnKoZfoPCnVKOvpsX96N.OpPzhEtWkYtltLNHfE4hV.QtNOX_fcVdIAF7jtqIk8JXV1JpTIv_M5zKYhy706ravCTe9Z8dmNgyNGVeyYn5e93Gr6VERi7DvbbnUPjZONeLCD3eCKw07GdRxn01cxklTanCp5M2m2skuTpRFuhRPPKMWrw1U2gUmYQkhf.z3f8D3xBtg55mcs.s4FYL.TOdQbYOdw1MCMKDnPvLUOByhM4yvoI0G.zx8gqd1t01iwZGNK9bpQOoSD9O8NwjRbammrP4KE.gwGu_kzSHS6WetGjfzLMUk19qYxjCps.IueWmFZTGJ3eLmBQOd0gKu5v3O9Ay3484o6BBMKJ8AKin6XNJvvV7h2sA",mdrd: "UzH1OFGgS3VzuNSKB..uxNGTo8V.A2TOMMluZGbk2eA-1739242823-1.2.1.1-Si5rCX3XS5rqaUEQ_RZoO2xDbkXh50w_FZjKk3AfvvgYWbqJ1MNOUor1Do0ZJNvhPpmBFJN6CmPh6SFFhb7LoMgOSBTJObQRr.PZrNCSkoR6QwNeLrGXe4NAY19M2KKQOxXqddNhnNcPsn3qqXWiu.RgoMAjmRIzvS9V6hU17EzvU6Dc9xV5JFIx18650f6Gv.VnaOAFtYw9y7CMcPNyt6O2UF4q4JQ7LDveGXa..agVsta9rICqE7nhV2x8RwWkHJHt_23Ubcv5x.uD46QiVe9gbtf0S8UjllGU4MwUXE8s31cQaPXICkuDVWQtxsUqau74a9lVIOK6mSfR5fXNM9EDDw5TLgEdhoNdNEfWGi3HXuWarRiDeW3szM47DzOsu_oZoXUomuw8lxEy8B5tEi8xWuPH3h7GIofxNQ4kpny7wCReyo04g4t4BlmK0vPTAgiDJYu3EMvL9Gm7wzdqVtvtyMwrjovvdEqhpPukPjJcuIkJSFr40fwk26Ch1L7K_4l7N4rcYv4VVYA0M1uKRWgHgFsS1fEy._dri3YXwWAWfjWr2sFe3EGNjelBwWxW.oXxTV3zS01FPoKOYReertS4bRGc2yHC1Un6yTE5vwxjbV0OWXK9GmSDVnOgbE5_Pv9XU2WlnOcWbfGWBjeioFpCYLaBggBrXt6mdWGnE0_TmyD2c_ZhI.yjTPRlTuBVTp8f7ZSc6InSDqM5QrnEqlFTPmL66vlWIghPnaj53KbedYdB7qNLOLBJUtaXwrfe8rhVwxlDv3dC9Cu.1Eecou_AWMbHz2y2rC4b4CzziQq5hcpCxHOtJZClvL2g_xmKDh_.jemYq5SsMFDROmCZVQricAOQzod0oz4C5dvZu7AmxkcatdhERwOpiLbbUC9mKzR9d3LcpRpZLcSnCAsY_rp2mMfJH3_Pt.ZocLBY0BtfSmh_c_Sj_Q.e4uvoFBLuSS7C5peveXEUrNFX1ncIw5xYdl7OGGWGwlbXcHeqKDM3rtRthj63aetMid4GEWtldbIDVV13U57_jVz_qVDGktfJrQ7RIuXx3hKQw2dr47wmB7xuAASsGlYQ6VoPmHzdQ1xq3nHJWcYQuzoeIwcUPn82m8nDwJvxc1YfnIcsL5bHqrH2png9NTKoldfsIQv4WElq5_aG_bMPTdbhy.msHCDOA_pYtB_Y7fZObn1PrvIurndfNayyRnwX24Fpb7NzmvDYKP1s8x9k5GjILz_0zsz57ffto4Onz04bgV5O7oebSjiYdVm.TuoZjV5Nd703GvjXbyZdcYeg.W3aWbcwe4deQ5TsSeUhUppfALX0QacqlAOPdmFMNUiF5nPIiF.YjeBbEmUb9EilqEx5psQ8vW8fT7dbwKD6uQucYqKpdayRiWEfivNLJasOainM74PaFmlnzva2g6nIqzS9SMVgC2nuBkHTwD0rcsgSiF3EJREPWZ4S9S4rTZEF6pJvr7yAfIzxLtZbma.XYl7PFnMftA7MC5MXtWOw8fRcVs9PNmoDRgNV9BDHBUMfAlAGmdBJhBzSMX5CxRci0FtvXKuz4EWclOL0GUFnzxW2A4JZsQEBQda7KWNVta.ABZ91tTXMLo5yeT84LL419hUy_ZtdWfH.W7IkH4wzjiqbKmUOxdb5atYm4W9r77medHHRHz_.k2D_5HDlT0827WQQHrwhDfZHRpTsK4J.8SsaFvOgTpbz_.D2kIi1lZrcPWiTz.78LDHHzdP8hUVMpaA_ba322KR7Slbw.CqhGDO4TeDB9QMzmnfRjWbu9cgX6xlYUP44PJbnboK23OZEWg1xtAUE0pq7amzRoM2AQ_LEvCR_nYOCDN2P4KdSCoZvdswERqE9"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=9101169dca713adb';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\/782674871760?__cf_chl_rt_tk=znkpvHsKeDnKyH9RtEV91MN_aCuWH5.yj7IRoz9wa_Y-1739242823-1.0.1.1-1vZwHLjAqRpvD3yD91Hj9AySeGz71ixDrexAC2noPAM" + 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