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-8352176490-gov.caltech-edu.pp.ua/post/8352176490

  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-8352176490-gov.caltech-edu.pp.ua",cType: 'managed',cRay: '90fcc6a7fe01dda5',cH: 'zoj8R7E3YxWhZ01vQo5YXKmac3lbDsBUNpAtPUKXi9Y-1739197605-1.2.1.1-xfAXjwHA3LaeiLh4JUNOrg_kxY1XIMUnr13Trv1_M.DYaPKelEkRgc5wopspn.G5',cUPMDTk: "\/post\/8352176490?__cf_chl_tk=i7GllZBP_R.Q_THzClPbtBi3DZbP7HnXbWC7XJWhSgk-1739197605-1.0.1.1-fJHt0blYiNC1YdDa1QC6JNTNm5jdNooSd6opebnUeEk",cFPWv: 'g',cITimeS: '1739197605',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/8352176490?__cf_chl_f_tk=i7GllZBP_R.Q_THzClPbtBi3DZbP7HnXbWC7XJWhSgk-1739197605-1.0.1.1-fJHt0blYiNC1YdDa1QC6JNTNm5jdNooSd6opebnUeEk",md: "D4pwnB.paHNHenxMJyV0gUDA.v7_43RF4oUbc4Wv4Eo-1739197605-1.2.1.1-N45sx6ebD2OsVL0d9nkhK.ee2CqjgJM.BiXKJ6X8bO._UaY42xeSzZCZmzxCXuvb2BYXeWhjQpr_K4qkwLT3lC803ZWjRh1IfS3JfFFBfcqMCop.3ZsGdckTYlF5AhEDWrXNMljnR8F1F7UlxbpQC1sKSE5nBV1wwRqbJZb_WXQ9idyhgL2bcqErnUXLONZTHle4JYcK3vGgY3g17LTa_aJVSOz5NSFJULBod36lzs_1Fe4qKcZNlBGUnmamlBywj_FQye9zZ_HQ5fcVzrQ21XK13NotcVRvX6bnXrlTIJ7poaGiiFCrIge.mV8mmSFovKUv.LLclXrjWLT0QNIQlWWCamzUrw0KrKJffXuzB2xG.5D.pWKZ7KgIopI7.jvSQnTJRrdNZwSVyl8JdfmNHo6YQ43zh6SoAwpXbTdJR87AYpt5vsO7GfyH_.zpmpKSdxG4HtOWiQaT6P6vgGHNrF2Z7q3wUZxJBz5N2CE06GPwzBYGYwuOQaNrWQeo5P8GrM878Caln1rBC7HHMirg_8vMnYHWqDcOMZQLes4pi91UNs3mnT_iO_SLmAYvOlQlWSr6oYVQcPwGiij1PnzF2JZ9LxC4dmCW.c74rpRPpSJWstlq9K21anNp9hYPUTmyaHmZYBW9kB2Wa0z6Jp0nbVPBUm623nu2FbS2pqUkCbruJbdMrJlf1AImLCYZ0SN.O5KVI36kxVzv0utM_KiCjqQ9xIiBUa.JW.W9pSxbJWgkIfv9Sa1p76vLXPwfTEqCyF4Zf9mtODysAXHhzT5c3o8tTRQ6qRrqr12d23HUIUIOV2s5VqIzRCr3ncmGkI9nCMf7ZHuZHRguL1XRD6t0TOhOXbnZhVzMGIFwDVO0cw24nFDhdYvZplTVBOWLvle9p8Guh8QmrFGPKFT3.zy4BDgD_sxoVi.kIs3yF02FDRi3J89ueuPfF5EFAUhxpxXvUeIc7bvMxyCoevgVpYZ0olJBBVHkAX9zOEAj3zR8SFpfyMS_lYUD82tKriyxiuzpEybRxRfIwCvbGBfp2YtV2VWidrbCEpVg0THwu0vQ4HEKahFlANkva4WrhRsTXKp1YM2HW1Kv35Qf9lnIjHh9ekZYsha_hLL08a6ja.Pjuh7dbWzK28UTX6UyiNYVQYH7aEvDI7wmZi.IFm3wYwYdf6wFC3xLgPd_Zl181ZK9y6aUauxf7H3xlI2tH04k1S5zn0gxsCoFfcM14GT.n3RmtH2MxELoqDedAHFOxK5y6OK1YLaYguFJAMXRKcWEsbbkSSONBShfzh0lysmi3LtQVAJsUdCTYLVv6_f0ZZbLbpCI5Iii3tU_3dJtENYX41w.vc4GT9iv6QXIoa1lrxaFg.o3baskoBPv.QT0xNAMfiG6HK5AyvXC21kJ1U1oCkgw0bws5TosgwtJszDOOI9aB24kNZ__coMSTmGcAgl_d_ztsJ.Yg7qf5Qw7UFHb4kCGbZyCwc0xnFa21NogX6vHIaJ7aZR2dIe17E6OShNzeh0AOy_3pEydQgfFbZlQukcEb1ci3r5L1UfcXjp.2mLudL2k2RlLmPm5UCof_tG0Nxa4xc.m6hyujSU3tG3BCPLOLIQ4n8hPjriA4Ty4ipuO.kakREBmg3_k4x4wd_BJimJJ7sytCMRSS.UdXhtvG.LJxwQfoGJxOmA2VKj4hN8WDRlLONBNfoxQdC.eLyccyhu9NfbGHk38fLX9r.jiug44g_nC6CMT2Px7zXj6P4sQi8YkJ.KDKOvhy.F9KmFgPG9n97CmfDPL4Uvvj8N4lV5v1v5vO1nd24p0FtuCJHt7B.p8KAfvve8LR84luBebLCWofndBiFZ1Z7_p6haScyIYr3JIzECf6oS8BK5IR.xwH2l0nhunghPhbJdWr_TRk3ZHaDskZOS9wBN19Wvk2Y93Z9eEeJmSfyAEVPoiozSmCZKqfvhYZVWcJfBGNK4CQLfQ7Xo3qt0F_8U7rIi6VdreHBOPPcFcVR2.t8lv6oj24rnZUj50gtepHAOyHNUMuLe_QB0icQGYZ5erY7ni3BrPROzLCSDWCe22a6efXFQEa.1oQB3WyoqZiTxV_RiLjurXX2xxQ3RqlAMfHzSS0iXYXHs0N4mkkdzjuentMPApKGqLpCOIPFCUYyfDnBVr7KiDV9LPlQccrb5mq1.KZnU_RLCu_9TJWiVq34HOM5xDuhk4sz6YSEQCmAjKDDa67l0m9Lx59Am1688mSfef6lkZ3BzzTVT01iMg0DKadE.3Iw",mdrd: "5zgjqzlrDI5.0C.u.aADVP.11SdK_Jtzoc.taNmuEfQ-1739197605-1.2.1.1-9H9Iya_2_.NbY1haXWWFDeOYKMUl6_7G_eCD.omPRZ3IlCIjpZ9EZK_uCRTw78J8.zEJiVF5.4G0sCgx7Ff1u.Us4MUCSB3jLeu2RQlkn7TM2LISh2Ig52cVhr1Z6qh5FN7bH_K.MPPaDQceq7mSf4h1MDXcNXTsOrUeTyJp9pQSyDgHXR1DHj1v7A8QzW_4bFrNhFTWJvdVoV79Muxkx4v9ewBidc0y2SQ4.JcAqwa_nGbiBHTuVTwH944sxjZStTi_RYl.iOqNxLwBDcE5aCBUqB6yRDAWHkD8cK7FpZRQIzvpVweuFE0DPKLM3ZJYg_9yGysNP9K.aJ6wA8SRMi3TDfrLdbZx2SCVtCC1BKRrbCQHUud9KWpJyfZyviwd7PzFMN0eopY1Ieh3tWvMHj6w1j1pmVtB.WSnZCipf9r0heBHiizQ8GrbtLXcFP61Tn0sHr2ofqVEkfF10SOgf5R8v_eXD8dg031zN.qhZ6UGBXiokFvXtFHmKUrl9Ty2S3J6GIrZz..aRS6m5yNwccI7Gf8gwwSGIV1.lDgZUYqvW2qvgzw0pAWoBArqmdkCdlrw2UOStwPZ3LnptMO92_LitkXjyaW6jk8v5.adzzTpudiTO2wp.NDBfpb37uD8cnedBwX1D8JNZ3je3jls7XK9WQ.I_BlJiEHV4ChXbnFRfqPUXe1d2Rb3yB6EhGN.evRY9dhgN_u9e1ntyVNLPmZEqWVOfU_V9V463a_bv2_m0CRQobZvdEsCcf8QHZVlV9XGvGaC63sxIj3mVQj3TqioTH_DR5qn7hw8KCI3y1QhKNYVznqARmdEbvbZW_BoHkw5LSu88fdaEa8.gOJz06e98cEljdm5yBBQGu6MlY7IB0XEW5DE_nOiQzp9VJ6SRSf21uMusek554icStW9yQN9Uehokl7YjMyeMoKy9eheu13.0iPpE1I3NWyeceK3IOrQUsoPNV6o5xxyOsXZhssQXAGb0z5v7I.hUxEOOIKMJ0uL6186tgCB5zsSG6RrTvfZsEEi5AqLW4Yuf.KaquZVGB5J0KoTVju.KuW_OVGT9ZScF_81tfcd1t_J_0xILWWzhMMeXx7Ea.LMu2BNm2uH_7O6dUsNy3rSmMkOjD0yPTq9HNfMZ7nJKGAZwABdTrdvtQDBTAeAIN.C07XNKuDSUvO0zkPxA7KAgazy7ZLxw3kCoN6kDoH8cJ9rLkmz38HU9BSzU9X0ezwwvj4vQcZhTOmGs.FkFtpWUB3GOvI_Gq8uTHff3ku6o5SNtmtgI1m9lCBC9yJItfztcVOJgMpuQv5dIRKr.Kz6Kq7WU9YdSOuZbfD32C_Ize2cPkGhUqTtpt_GnxLmhcNhX52UbnV3bhg9S5VqhMHJTcToIKqQAgoliWnYCPe1lm8GowuCjOZb1UanQxWsEiK.ciJI7W0vA5tSu9novJQfiCQf1hjw22IZB1slCWwhvJ7AX9bpSASjslCyVk2xh.TWFZT3dnfzijKo_sf.L7Fl8w26gxgGmD8FjXKN6CHSBUwgwCLryjz_Ha9wOHrHSj8_x8qQbIwi.xDkf7qw5W4b62W3PSCdty0D1NVEXsZtYfW6Dp13Iroy90PibbYm0RjOwOE9KluvrV1Q7FF8QSt4z6Q4N3CRaCp.uKHMDRRcrLRApv075rdlfkoK67fYAfSZ0fQmCKt5RwIQVzaHXuOhjuBfQBALWEL1wqyHMfYORpIib_ZHSxES0LP_qo_vXPCQP0X7Bhs5Z1gYH5OmpmxZ0L0N5KAXM4KL00KBzbe5a6kTqJoTtEGrBC7ovZSAjen1tMeITSACoJcEqAL.NVrlCZstPXnyKd37OLGrgfcDjtQZiY51"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=90fcc6a7fe01dda5';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\/8352176490?__cf_chl_rt_tk=i7GllZBP_R.Q_THzClPbtBi3DZbP7HnXbWC7XJWhSgk-1739197605-1.0.1.1-fJHt0blYiNC1YdDa1QC6JNTNm5jdNooSd6opebnUeEk" + 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