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-7204385619-gov.caltech-edu.pp.ua/post/7204385619

  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-7204385619-gov.caltech-edu.pp.ua",cType: 'managed',cRay: '90ffd60b9e98391a',cH: 'Rj3Ca74lNKSt9f0qU9HWNkK.7V0Ye2_E3fy6emABoFY-1739229692-1.2.1.1-oHFweFuUOw5gU10AyD1q5p4f5r8o7V32aTcp6FpRAJ6woi5peX6.0cPPRVVnoZ2q',cUPMDTk: "\/post\/7204385619?__cf_chl_tk=3wu2UnaZDf33u.DeCCUdSDJ06oGT.MDJdjNJpL9T.ic-1739229692-1.0.1.1-u_DtywNqkPKYvdgn4b7trcgBHZCsUadomd4Nk7wy.T0",cFPWv: 'g',cITimeS: '1739229692',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/7204385619?__cf_chl_f_tk=3wu2UnaZDf33u.DeCCUdSDJ06oGT.MDJdjNJpL9T.ic-1739229692-1.0.1.1-u_DtywNqkPKYvdgn4b7trcgBHZCsUadomd4Nk7wy.T0",md: "JS4djU7yBiNv5ryGIrYJFoQ9bMtv9ZRjjDk7v1U3Ze0-1739229692-1.2.1.1-VCiSeUDC_88wuKGQtLELANxaAYUilE76nDBgcx6_6xui5Jyby8BlFSuDXHw.Jw.6hGxZ_bizDY1jVNIrIvKN673h5LdVvlEytDZGSbKdS25tmlafs6kw0LcfkFYJt9Xz7a.Bw_PY5wMzGhtk820HqtELhAG.wGjGen5chfysUdyuIjJgHkPV0BkrqZA0oNmSkdDzakn7aRqhAwAQpaeJDmJc4rik2h__f9vM4MD52Lmayny3grScopXsYUNrk3FxG.Q1z6tekbcVYgvaZ.W8A.TsoTrwllvforaaRF3wZSq5eNPZbNu7ZjUOzU4qLhov2rT23Er8CivEzk89t6Bxd8iIKjYkqgfrHSl9exOzf_DVWRgOm2IDcVbTH9CSYAutf4EoFI_9Qpac2nz7_jnOvtKPyknM3_WBQi__aI3HzUUBnbr6ZZs1n805UYSUfHvC.nc8Kjuu4TzVpltmvXszBZDzVJi3ap5JeYkxsmo_qkOOQoMPuHFdTmT7FSupaNVDoO_VPKi_kimtYL0q0vjc5qNsRVkhh05M1WHyvI79Uy2LmeW6hdP5fhN.vT5EkXjaMaPIb_PdhKBfE_zKntZXWreWtapMTnD4wHg6Ne4A9ok3GT2369se3PdcWD2gW6TBwdTb31a0orpyGVLzACEID1oa8sD71QT1x0ZF7ol5NKg.ltwkCE0Nuj7YikR1wqh1EEoB0ISiQUTTkJb.b_wohrVRNnuF7nw_l5PjYpXTePrXEUlYSg769NWQPUfgGTUGR4PpS0M6ydaxfm9iIockcFij88CVJAl2sSOBkAsOJ7nOuv624_2kHCe4d5t2zy7EmBKfX1Shmo2P2LBhjg00O2lhND5ilx0thglC7UCalJ.YgKFdFikG5uWdwWUZerJ3gZ4UjiG1EhJHRj3lkzJk4NOHuQtgekUN6pmv7BksHr5b7q1Vj4mWE_C0LZWltgJyOhf0D4sIAyyYgUD4VF11NFnwVpuwycwYp0lTtytD8PkEQzTsCcWC_0LkuPtlP5QVj5NWlscnU18aWuC1YhaVdxpXqjM79t7_UIEmPl.PmQIiYsGG8mvD7V9Jdu0VOltxmkE0Si_Im4qc4uZcOOrwZK6vFl50_ag44rAj878OH2hL8qusfGWhH73GeZJu2IOU3Dp6LHlTtV0F3qg9mIQttpRmXfscpamAkYnkaEMZZvN6i23UOP68GY_7qS_2SP.Vc4Vvey0MrP4maaiOtflHcV7LEMPeT05PQI7kLnTgrFgybCvL1k48hZjhnM_H1c3eA73tZ2W6HtRKy9Xe7KRvffCCM8eIi4NodR45CXfMyhHmAVpYis0JKBjjiO2lUH83IC9atMxMC7b5yw.XnAQoZmmkgl0WVHivysGBlgE8gVL.N2mrGHwUT_VpmsI8S07Gt0qy2NFS0VPbpr3UBkx4V0qZIJ35tnq82L1QHnTmpDnX_tmObMYbI4_MpY5r3l3Z8ZM5Q.AX6tA7QXdeh6yCyASF4KyNoDRXONrJgRcAkWBMdqtXCh6ft_wBykmZZckGsSs7N_n0pi1Jq4q7wPAnU50wWxcHAnazCecHtqACocpx1RaXRpwiooWcP_JffXNJWQeqaziZSztKJxbMb82KpBrJRZh9MLk5oR_G3woDVqExs6ckqmAtdqZp7Jd4HDXDDmOdfVXlvNadoMyh5p1JNhhA8WPXCWsR8ScZuylWkq18NkTAdDXSbfCn8m9gz7pGRC.LlQX7ilKsxjUwkEDMfJPw_osZU26Ittz6hufnWo0zNjzFfDyg4QnNThB_4SiCO4XiRCIZiU0ebeX8HjxKAQmDtjm_8DGUALrKuCHoaXkF8J9R56HyTVig0qrG.V6PAzpgxI_Ke.9UrHCvnC7u3u8woch5k9NRxEpb8cBmdRqWA03VPdUTDHS959OVxhjKRrRFkaM9abROc.YNIr9YW4R15SVu2SCMuElL_EZMe0K49dWqjZLxBKiDH663RxA5UAo6dlU5Pe9YDR9fgQvbwopVCYeRzHsaK.t9zRc6gQLRmYtf_6HZy6JUWDdXoUMYE5UzMzG172D_neplntE4UjLQOK3FvdX_uq9_6TyjuGTFsxe3y4.A0DmQGtKyIvNLnHVvQkgNt.E1WdT2LN4ogngz8mq0YvaDEBeIMpZXy6l6og_zfWsk4pnNVT8ir.VZLUkgzWnQOl6MhzQvE5SvNYlb0VMenlll_YZRrLNICR3ffN3kh.71MLr.UkYkDjBBDerzTgxO4jvYYfJQA4T66A",mdrd: "rrbzqrNh3jsuA0YUgyRSFtouVVwM3mq0.rUQCheSLLo-1739229692-1.2.1.1-5_DkM3HslmHBL65F9qs9hbx9iaLtPMT878631VQpHzeg04iTdyBirIlbA2t5REI2REN34TQ4h46mYTBXv5KcmPPehaLDaPucdmOiDXN1Iejh2f4oU6bBMEtln8YSRqNTDfKm2tBg64ce_xKXrCngwaL.XPPFjmZw5o16IrGyIV7.sf1HbZzBq9lraEEZTXWKw2uL9o5JTbPUpe6oZCAILR7T9Pw4AE0izcCN7X6UxcfpihTKFcZo1VptqeqeZSezXRZghTfV3GtY1ekgN6fAh5sZNuf_sNtemi2HuwIv7rLnnyoD2o7gsw4rbtFGSt3O6IwEP2642O6q2HHFViBdS2WGtGZ3Dxj08kJ7.zgDjNLZ8ifnalyivrQRMuGk9FmD2wpPd267HD6ymbEKVn0e2f.h_cyTIC5n2v8WjNJX9mpuVGagftfq_bWS0iEi4ruiifWqzmQ3Z6jvcy91Sm5pLSstNo42kX.JNKIXVguCImtJlkpkg_xcmVg.Wb0tD0JBIuoHq.EMcuJDws_F2Aj5DrPYlCLS3Qzz8_sjMFmPRl13fSQ8gFcDMTtzsuFhf3LCfjJU5sCM823TcIV_JXaKQtD8BimRjTNbUy9d1SJ09XV_Rjfuzn.RPkgvF6mzvi7qjnqNkkl.f5m9acacT.ATkzL5j7USe77IVesaT2vaGOQ3IhQtffRs2avZAgnaauXaV4Er4zRLk3CO9fgb5VMC8Q1lx8ELCBvPbvKatKqL2jmv7s8x.A_SoS8t0wie8ygCEpJcPtwLxxuKZyWBdx_NxQfvpmE8vEqA34IlYLjE6nydACfyEka6TeyDT5xz5NGL6Grdgh8Jpfom2UvywU9xyWa9HydrC309UdzHCAV3eV3KifFKDKFSqn2i37HCdEqefuhjU1C_xGGr6bb7SF7fWr_Ht5nEPCucfgRkBRTJIu9B9P8Ven9ohkLu1LA0HQghLc6bt6WNjtb4i0GmdCzwimEPd8rVojgrvVBI2tWORdl6uB6y731ruznb1KxM7.RxEUt9VEZ3KUNog0EvwSPQSrtqGZgWUz6c6LqOh2bnqiaJKIYb.Yl.ta9qxNNlJy0DfVAfamqGavtRJvGuv8RxYOQZbAzHIDrCqnUgG0qjAbqktDzyRpFvHBRkF9WbquFbLniWpZxiPCOrPeESzoNw3gqqzviG2O5Y7pN55B_TSGZdUwB49Alpz5oEVk1lEnNZbVRPp5e9kxE582d7gmSIRpa7QdPkSXf5WMQv.GDsUFhC71TdmCUb0MM9d1hS.qNS05CvLTTLGBzLTBs8pA3BK5xnS2ruaXXGktlKwo.YovfiuH_gPC6FkR9UO_bXb_ayQlINOjNSqv2m2zqFnyiloLIhjqiAiVk4bdk0bHyLlc124__EzOzj5E3qW500GhqBv9eAyyr9rXs1E09No7BbvbEA4KbG3d9ccrQe39wvaP6b2uGmWOOTeo03qAYaLaIitEU56WqDgPq5ICD1VWNIS.J7mxuZPRt2xpXFUCejtWPXJ.WdszL_FsJ7qQFgvnshX.C_Tz1n9WAc1YejqG4IqJar77oe_UjVC2IIxFxvVmNAziOQJsJhtRK.AH61RJLCtwXsGOFxj0TKpKlyJad5cqP4F4ltTtQhurBygo9jC7gfG8wsl0Gj_Fevb2nS6LgJOwB315c3ofTSWp_kYLRpXtuD_DYxNNRVvQhGI2RO9VlAmhWrslA9v3nrF5BmsLzEblRwe9C6gq9KzwBY3D7A36jnb7pV4BB1IHBFJSjOngCtADyEp_vZ2tn2w_yghqfsS22tmjynXoZe.rDu7P1ntXtFVL.Uzwi648HDcXPRmePLHgIMXSn1tx1e8QC.JAH0"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=90ffd60b9e98391a';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\/7204385619?__cf_chl_rt_tk=3wu2UnaZDf33u.DeCCUdSDJ06oGT.MDJdjNJpL9T.ic-1739229692-1.0.1.1-u_DtywNqkPKYvdgn4b7trcgBHZCsUadomd4Nk7wy.T0" + 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