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-8429576310-gov.caltech-edu.pp.ua/post/627499962944

  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,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIzMiIgaGVpZ2h0PSIzMiIgZmlsbD0ibm9uZSI+PHBhdGggZmlsbD0iI0IyMEYwMyIgZD0iTTE2IDNhMTMgMTMgMCAxIDAgMTMgMTNBMTMuMDE1IDEzLjAxNSAwIDAgMCAxNiAzbTAgMjRhMTEgMTEgMCAxIDEgMTEtMTEgMTEuMDEgMTEuMDEgMCAwIDEtMTEgMTEiLz48cGF0aCBmaWxsPSIjQjIwRjAzIiBkPSJNMTcuMDM4IDE4LjYxNUgxNC44N0wxNC41NjMgOS41aDIuNzgzem0tMS4wODQgMS40MjdxLjY2IDAgMS4wNTcuMzg4LjQwNy4zODkuNDA3Ljk5NCAwIC41OTYtLjQwNy45ODQtLjM5Ny4zOS0xLjA1Ny4zODktLjY1IDAtMS4wNTYtLjM4OS0uMzk4LS4zODktLjM5OC0uOTg0IDAtLjU5Ny4zOTgtLjk4NS40MDYtLjM5NyAxLjA1Ni0uMzk3Ii8+PC9zdmc+);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-8429576310-gov.caltech-edu.pp.ua",cType: 'managed',cRay: '90fea8788c8a3b2a',cH: 'yn1SYJsR5MCsFN.3lGGDoOlsTvLGgaF8LqcIP5r_.n0-1739217340-1.2.1.1-8XnOZZiiK.c77D_.b2Xf7fOzeB6tduLCN8J.a7rJGMa32bEEta1YN5ZsFcOxfjec',cUPMDTk: "\/post\/627499962944?__cf_chl_tk=6Hmq7cTRLiStyvlAcd1hzkyIEaYQAreix2Lio2BSQxA-1739217340-1.0.1.1-RXgGzlH0.sLyodHN89nRDgqbYz48AWTVe3ldBsUD3dA",cFPWv: 'g',cITimeS: '1739217340',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/627499962944?__cf_chl_f_tk=6Hmq7cTRLiStyvlAcd1hzkyIEaYQAreix2Lio2BSQxA-1739217340-1.0.1.1-RXgGzlH0.sLyodHN89nRDgqbYz48AWTVe3ldBsUD3dA",md: "dvvWImWlpipFdFbNNBrjOBFcTx3LLEEJ_jXZCjKDzV8-1739217340-1.2.1.1-Dlm5Pw92aOgw3jZtmI2BgLgezw1Kw50hNyYIidMJki3NP7Be4D9IajQpKiiwp9.cT51MXfXmoovStBfjRuWvwCNxKuDdJaDShrv6r21OK2sMXf5omQEMwJX4Rt95xPAdhpTq_KvYvC9C6ITzSF0n2mqfXJlvzQVgSoj9dYlamZqNlGh4lP86b0X8VTMKgurx88jDxfjyhDwFhN_kfmE8Awr0BfIDJlM676BUlTe86iQt.1W5uTSwq.Ld4Z5u1rQ.EqYYSfoyp1kCRV6dM8gw16OAAOtwgWsL7pp649nWSI5dTy.BwvGnnZMM7x5zpFgG6Ou4jDncK6t7WxIPOtxQeZWrfwwdflMDDxoBvs_sH7SQoM9HpeYE7BnpSJe9xn8uoUsyZpW5RRsYN_wuROrhd0CAiQjFF.G3NC8kYldNKAroLvdl.Z9ERzX6MBpE8hd5G3.lYefkjd9JKFSRjB9sjMeXwnGtwHMNeNyiPFFB.WiCLyGpdf14QHaoA5WY.GzJODomnSFhPxAsxdFh6c5BJG8RcOkiEzL7teLVZN67tHLGhI.K7mg9wIRELVnpp0in0TDkvr40Bxp3DVsxvix0RFRwjkRw_k6H1vMFX4FiJzahtcIN2G1zH.AJeioPeckNyRA_L5GT.lu6raSevk0t0cbwly1Ski9SzEhxho3hOIaDpljE29xTPCKemVeGdL5cwZaMTW1tJUM9gljXVpq4co.5QsHcovlHp0tqSL2Rplw8G_dLRR.DNHkstdg3wLjHeTtoe4HPu5dpUTEhcxMgIdo13uJ3dOZp4CjB7WCkWj9zhCqqFThbMBF2AmD.NpB0Bkx9L3Ie9yHXeLVKnh10zzbKFs_ZFoxcMynDJUpABNSOB_2UIjfDWH53KzszVRwwqHcLLOdR3B4Y7ZpRIdCjvE5BwsvFD_r_QkvY8LGQBR3fCiPqZvWbagA.tB0VEpO_DlbR8KHsvxuBAZi_4yzgnPQOZxSsReBaLj6ap.CciVz2Vk2DfHsWED7edqv5aSfJ.Km6UDfuOYFNNhXT6DG6MUSted35Ic60ag4Ixg.cYZuuK2weGxSeMIDxrGs1oy.aKD4CVLUGZxrfVo3X2KO9Yl2aIacGdv96ODlXyafvJY1URJYPhQlH.pnvMsv9MzaJn_.B758Z2kXiOR_HntAOwwOyO0bH0qya7X5_8WaqWL1ZwzXEtf8rypf6kUVruus.DqMp2r8FcfvtUpumEnymFtwTqsgullIbMOUQUAZJ5Ur_U6mQzLXCzlugKAkwcesTHcL.VNB820oddOHY1LFFcM84KuLsZJWo_qY1CHPGMPPz65SFnDLQXHf1tuINIrHkXuUpx_rWZmRs7p2wvyUnxuUcheQMxFw08RyPfAekW9Ahu6Kbr7jZ2ECWUu8907j_5_l0f_fuVCgmzqr5fH1R08NvAdcxbmAMkLgEWoLb_cDuDCPWgiNEkuJ1pt5iwXPzwqp5q4Vl5fUTQf_KV_XOa3Tma4Q9bxgOwwt031eWboneN7LxjG5yRkP93fe0gAjUc57LckooTGFpZvTQ4GzFh1i8ml6OYw4Ca1rhHtMT7_PscL9zjq9dyHOqZlclZDVeO6DaCYBQzMBRFapZhdnbkq8wJrH6ZpZwzv6HXXPaMmhRQ2yPKUQV3yMFoApbbfW.qlUFci5RTmB.pPD.OxzWr.gsCtwOYlRd6uQcEjjo1akebNvq.7j88Wj2.JimNwlwPHahnwpPvKTuyaLKa0bhoQ4WW1zwVIk.BpupJMQt9efTPcurFfGqKwU9QQK3n7q820rXF2z6a3YWff6tgTGp7CxbT4hV5wYApik3f_qqm.Iwz2.xw4nyH1EUWZIqN8G5fwGOhfC2tdO_xnphMgBXO2ZZlB9uNb0Xd1AGhqfIzi2cztQVgrwE3mbZ4_5MrQo92nDiJPGJjGfHbK1Ro3f4g5KPwh9C57pZvN.i4mcyZD8ZD4L_Bqx91xzUEx_N30rtuOaVXRO0FQ11MkTT3CSrUJyLjG1d.SiejljfTprzyx6mv0Oyyx3jVLpy_NRRafmuIGGaDxkQXvs3Ib0e2PZZTa4ZSQ2YifsfhX6lVcAGuQ1Sif6xH4tSLMLIKwBgWWjoqKZ7SoFhYzyFGua6iChS1FHx87sn_nn5mX0btK.lRHVmVPS75rOG0gH22cYG5CsIQrLFBjHGvFm97Il_n6oveotFzi2EezpqnZkFju5Xi8EtrcVlz3KLEwdgxolJ6rfufq4L1sk0fkHy1ueJg2aRcQ",mdrd: "iJGcbjFOtFD0hZvJ4aFoSFS.iMudEB1OxyU1UmEwJR8-1739217340-1.2.1.1-Ju0kDV6d_vxKbvMbpI7bgd9FA6PeItObdzsdZMfemnW2Oqo7vKMMhTuHyNB0e0fSoTMfDDd0LjJB34n7ebMwWNiSrPUGjleg3L0UYCf_pEpcDglX23WGanZGmI.6.4_ohWPdjTzD73woUrpmPb8hAOPCVM2QN3ZyID_weXpGr2d1yl6dwOI8Kl10ti0hK2Bv_qTta7Pv8_gGksGpJ8OaM1Hz95MpBylltD0HtpXLKaumYYeTJm7XiN_or7FF80HuBNZoSnqnHz3sdREfqFWoTitiE7MmajfyV1VxzWq6hQhqMQHi2mA9Bnzxo.77PJ6QHHVPgXifiLULyeR29iMP2l5maT9fWCylc2usUV9bLoN.q5nfkfAtx0s9zFinsmgUFPSTXTfMgsPyL4Cr.4QMw0gZ14_iH2ARqI60aA89a0eiTCMgBbtF3BUVvO1ts9WegRgrp3HlLdKHQnfC7pW2216Q1kHynAQeqAIcseaFofXY2HpXrQGvQ53ziDRHq6L2v4._TL3RDrmhnwxi67aLALB.kWeg2Nm8we_jXe1_eBJp4ri_fM_AaANmrgzPRCiTn_YLdLq1r_jQJ.vBx0ZOQiIs_S0zV55vMOov4PdzQ90WQwESadUHnNMpMu.GBJMmxj2CH2WkFA5eTx3fY8av9Q0.EYNTLEEaMD1pNJTXr.6ZUIustHot4Q_pIgzmLCs.p.JtJqT.Ymi66V5UbwA4z3KrbBoiMCt7OYUAx2p2NeTo4iQx5Q68R387EtKWT9mh2qSSLDpM7YGeePIV2SN9TyUK9k0kpKWswojFeK5qbJqJB3MAVoageNPWlht40dXYgb3.Otv2qrPxNxtFiXk.JSFOAVzUcV9p8OIMBgEbDOJJ5Vy3Cdi9C7_Ya2JXFV4rBEyBtRS9A..0vcT1JKlLV0uV9TZC1DxjzaEaVnXb3_TtATEdpQtXUdwcfB1VUU.Pdv_HIhZA0Z8uJd1r8SKWF.jB9KxOHdbtAZiQKSGPM8qQH8s3sImbZ6oVUUxi264G0bi9yl9rGrczgd04m7TFpysVPjeTu1PtTu3K_Sv.k88BoXWxpS8NbdtIl6zgbo0SQepEgAUWoEeqYP8FEDhg6xJD.Jj65ZrFPygXDPJENUtACMfK7W_C_Fx8YJHVlgF5qOIk8kh2ePtSKwurrZOHY7aeL.wc_cZm8zTBiu09qIUi6CzfLZfiuVqU5nnsm4q3Et.dfJS81kfJLA6n.fkzbGlS7bgoMhGeScrj7rB_xMybhD3ICgWAYMViFIu0slBWj6Bey06yDbmLaAl3ksOtTPmomi_RmQ.eQVo_RIHuSGTUUYG2n.mdptUuOgW_72gDbCKv2PBoRZ_LIe2V2OfGGJ89HP4CERvFgzdO3hDWXt_8jzzm5zjBOUKCSWHxCam8Ez63DxIzlB.rZkkID1P4D5Lxo4aClowdqxGGHmpgAFRT2lKL5awJnzaf2_LYEOud.0r3CQvg9D3vCjm6tXmN272PEclMuOOVRgofB2zG.Osu5ea4njRPzhluJuYGrBMjB7XDbZPJh4IaJR_JQemkeFD.0uKGtrNiJI7cILs1m0GgUTBylEvLacrqVHxqVYVJwsF8ix3X7zimWW.QZojAGRJysY1QT5wQhZgyOtR1A5v26x8CWxfGScoxyu_5X0TF_8YKigsXUhN_mvlVB1oPNH18pMIE6rqZ4H3pSwO3RJEPnJ5dkO5jr3jctjcF8Pa4hZvL5wHFu4ZG2V1PLNdHAnX9LghKw3NrxqPBvvXilo1g6hdkxL2eCDWUDSC.2fpMvTT4OhYeYQDb4JA.F19W63kIDTHg4t49fngpkznAd2Vt.izhpOtAGRS1yMTLClotR1pV.PrQd_HtbjdgwVH_jw"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=90fea8788c8a3b2a';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\/627499962944?__cf_chl_rt_tk=6Hmq7cTRLiStyvlAcd1hzkyIEaYQAreix2Lio2BSQxA-1739217340-1.0.1.1-RXgGzlH0.sLyodHN89nRDgqbYz48AWTVe3ldBsUD3dA" + 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