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-8602795314-gov.caltech-edu.pp.ua/post/8602795314

  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-8602795314-gov.caltech-edu.pp.ua",cType: 'managed',cRay: '910134298cdd3b5a',cH: 'W20SiYUs0vKoW0cJxg0OCgGPmrec.n_X9hDSbZbm3bE-1739244033-1.2.1.1-xR2jwRyMre.yC_FxqzM5rg6Yhh1zFLOlTWZ7NqGUPVuxLrgN9fkXNvwx499uKcLL',cUPMDTk: "\/post\/8602795314?__cf_chl_tk=7WSaa6MtzA9hVmkuQ0asz0CAK68NaGeBCYw68XtiC0s-1739244033-1.0.1.1-YNP9LHXvTD6M0taZme3oplYkmg7cwLPOgQsOPpZyhIM",cFPWv: 'g',cITimeS: '1739244033',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/8602795314?__cf_chl_f_tk=7WSaa6MtzA9hVmkuQ0asz0CAK68NaGeBCYw68XtiC0s-1739244033-1.0.1.1-YNP9LHXvTD6M0taZme3oplYkmg7cwLPOgQsOPpZyhIM",md: "kAEGVJZAPx5dovWd.7SfGrTk2kGupKYt7kVYBMcRjrU-1739244033-1.2.1.1-uvOo3asfmZWdU5UC79PGpU8lNeojuDpLIiolBgEKdkOVzKGLfQHersB4Zbi9K3ez2K.Z8_7YqaRojA5yJeeI7EGAOoPD3Vy2CTg7nkdoG4nKoySgFRxd1KbxwkD06_Yqt7fSoove5KNuTexzMTYkD4TbURXeBL9jQMD2wO1zZdjl0UlZ_e9kC8D1mxnOcRsC3qzBaERSulUdGocFMOHLNGtiMnCC3Q9GOBG0MTa8PvWdOCgvx7CUdGHKLLSD0JfBRUy4uVSI.jmJ1tjmIIMl8AnVCJDm7DrL9N7V9iudYDjHFNoISyYSgnzKDSt9eCZmiuJABWFQwvnVIhONGgWULnRFCbkZEHt9TJYQXWLbo1GfA0Wiw5wMvbuQPpGTIcD.mep4TF894s0FFeYEOu3HnGpABpHBt7P5CVPoBBmlCmEw4.nqhcf8MXpHsMqTTFF.kA9_Utiyfcuucl2iFBozImDPLOsxxmfpm2dGdxwkChxbTAE.mERqM3jctkSkb5wDl9Wk.YiGjFCbp5DCion.NqoLVnmhzEEFd5PaQPy1T.zalk5JrnY8Li0BuUxIPack7ZGSpCl.POt0K6WyFcCbwtWVhXOqhLuM5bJ2Khg0j6ca12bc2ZcjjyUpelNd0aLFa4OfwN1fX2_lnufOIlvVj.EPpZt1On.R3tZEYeLQ0KonI6NehsnPafGFQuk3c68XHazv1IY3sj38szT6IzuKiUI5LZrGzFsS5xskhyPw7Nl8illP64dlPGzb2a5OehxkarIHvsrj9GHiJ1Cw.lWP14yHofRJCxEYXMe443hxf.bp_CU2SSPosNfeuP.1okfhhMqc2XWhk0.I._am9eRJxXlSs5lqSJPWtD3Srz_rGsibYj.SkyzDG57xZBHlttDRq9_4yBmUiOo3kwMCLLpdG7wQURdVIxXTeh84wqqjpqj9TtbQIaq_sSYuchKBr8Wl2Up45BYmQZR4svOK2izXq5RA80PVx7xZfdpLf3mFVMhJtw38_NbRObQCSH1ufeVtsyyewncAigr7c7KS9eno3q1axxpMxLw9diWqvmwNsyurhxcKpgofM6Ign5fzMlBw_dbtjJZj9ZqBHaT8muWdhYb8JsYl5Vjls9IZtfuwpPqLoA7WabuocoGmP0UOynWr2f.2iN7ZSZib0fPBVfYWjBJI37NwGm9C15kduwcgGGmLeySoKGssGDnD7QRpqPuC8BCyKQYn6Oge_JbpNYAJB5RM0CnYZTiCjPz2hnORkij2JERx5Ew8fRwRFHBp3tlPL_Qai40NhlJ8ouxJmjtcxoJ66HvlYNnhunwr9fm.HJmOwJFEa9MRCroU.w_Vbia.QcXi16A7zhgsVUh06M8D7i9s7s.cVWo_DHxoAscDowESh0nqsZDRxKa2MUcq9rSRC8zZ_306eMsG5OiQRfvV4PWSWCs0KGfrO4zFmB.jRilpBRd8G4nVTM.AOmdjC3jbZgrmvtBis6DixOKgKw4Kn1LAIqyBdQ99OvY1UV9aTtrCXZOIT8keNilL0MWOHJsHx1G0.Ukc920Qq6hAyUxhEVBSvPhjM_z.vE1loyVTvcq0Z1nM.zZ7ICp7Zfjzw7y.auDlJZOWv2bbU_6.ZcChWRnIMZpaTnjoxD0_PNppstV31O5YOzoH0mB6GCEyMMTEU8q8mEz0QuEAQsa5fysCNEnFc3flpWDEaw78F8_9PcARrJ78equKAIAAJ3gBtx2XVCClgJEVKWMAGDJxW3Nu2cEOhNveIG4BovePrL1sZJg_F9E9r22gkTWhNWSVI1ZFzZLLmIjxWzS9ylt7ub7BcUKqhy5uoam9V5g2tOB80DYkHFJ3vBrAKWE4rS42PQPESZdM72.DymEzGfwI5pr2cydSRwnEK1kM_KDNKja0jVQH_xeb_0Vo_a1MwAwdZMxwEptIyZLSrv6IU3tyiGYWskNwLKXcWYENdzqdw_S8PJlCzl5L2bZJQBKC9bVcZKkBZV77R38o13HHn3yjZsrSquj1tyZZcHOf_RqC_LUMlCEdrLduyn9B.5zvRnIEiYnzbelON7KbHa.Y1a5bGu_xWbO69oYay5w8LAb0qfDwFYfRfHU7F0.aeAHxdSkGX4Ady135My1.fQzHQ.A99fMsFTm3EhvZBmugQ0ROpF7cXRcuMwgX3QGBfbhYvMk90dxcVtSKvkxi_LFX2tzgMAKteSL07OPul2UAqN4pGpVIEGutD0sJH6yqzUK_Fu4z0OnRLS0ZVEh1hj_m10UKr_TXVQ",mdrd: "DOwJX5R24W4E.M3HifDntmUV3B0JFEjM2Q2VSg0FfrQ-1739244033-1.2.1.1-hrt.1JncoQOl6vaw9LpKXtdjmgy2Kruvcv291ygNPfpwhF.Gj1lQESkX_8goNp1UeS5JDB_sKocgbq.0hwFwR5cPKY201JUwsuIIEAiUMcqz5b5xfFmSgoPARhbLP_Tc879AJFXbiom4b0OExo8tsbyvXk1N_dqD277sZBT41Q7z6qO9XBLiiIDFuq3QWqrpsFqdcN1ac5OmZHPUi7vfvUNjerVVKxjnzcXaJIHxkHqmEM2yHu.Gfm_DgVTYXnnitRCfAO4aVxMNoDHAvIcwOAGICkJqkelBYIRTdeCiG.6Gazdkz7uFozXR1gMTWws.HAH4kbrjw_H5tidBjuPI6woiBU_cWHJ3gn3k0bARzSP8HzTyew0tU4L8RVIXmNUp..xfzwP43lj_97tBWvil.sltldPsrC4zbcF7NjqBfKm.2CYeC.33oAXemo4JbYavVqowwMJLj4fTRIQpXfdOkA6gK1qLvMeVMpfqguvEYrvLHGpLkNiqC9YcCto8tZkaDYt6VuAc2n_V3.dpQqdxi8wDTDKRihBrRZNXtLK20iWtTeKnYfCJCUizXYkfIB0XC8Ks_CZjbAzly1mB3UOvm2Y1IdOBhWkumpgxJEmbQyF3QlumZx.2mbFe8Ut6zmYWE_.8akFqMp5LtCEu2mQGy77HxzKmBm3idvigrcGVSpFnrMyYdm5oHIkfRJEbq.jgXYDSyh8zUKDF2fGjxn4tfP4r1pKn7CYyMK3tiPFFrdv90yTP_0nYAetPV_rZwOUDyn9mD9VxAJwv6iDmZmhAz.2TedESiSi8USfppU6TsXJHBst6zar4sA_KWgj7uk23lQlMQLpnjUnPyzkfPDAbP0jYau5t0W3aFcMP71Cg29T6n0UxMx_BR8oKxWo2EfvXOKR2i1gZRIgMt3WrseQHVA4XiXcMZwALvpRWgnZL1uLdNe_PoPoprmtBk6J9O7vmIs_L3R_l_pVbaObNSan_O64sZmLQj6LUMHqFW_yoWViSh4V2CQHWsUJozX_Es82DlZMKvwrid5Fr.7T5uG0kUeUYCyHu4pUUl6fzvuleiL_nLPXccCL7Cu_7ck_643aXmzFDuaGITYDjTbRkjWQJlOLiZnZHknVhc2bRTOp0xiySGQq_dIziens0.L00QqphAEY.xdJQUrOTmEkHv3qYL_CafGU8lrlXKs0fEO3tC9sEdh.O2FUBoZIeKPXFtBRVPxLCMLk5cqbKXvl9Hugme4g90UYNojQ4Vp1wtN8OjKUdSp9bsBMjvxCYzGIh1ehfh5nsb1W5BoxUb5IGdvBbpV.sVOPT8vs2DWwystxbtgTxsIsKXbRX8G0CG1ABWX.6TWl9e3RY5HgpMP9A.eb7hwKqGliel6RICIvN7pOpBtO3iEPKzEs.nZvcwsduNVh1.LTuCHYNeugoZt1e4EfqK.S8oIdKoM3VLGW6lOIY5y1ZCPnGUl9LOvqXYQ3Zdq9X152MXAOtth1Q4Sa_WPWjHAkwaLz8w1tCBwvwob2QCANhLa35VBCs.gQbL_Sy.6fQPlWw3tOoAvzWf1TXILDahENyDhMMJufknFkSJfeetWZC1Mcy1k9cH3AnK68loCSnhLG3GNod8FvALuBCFc1BcsAmWuzIl01awK9tFufZLgVG7vd7F9aGwWzE5JpHz.in3tfNnaOsIZ1qUuzBEtcVf7P5SVqAco6erUG4zh2BIekB54FpG3w.9NNCJNSY43w1rymjOygN2VEYiN2HzAIpN4JWKNhbtO8Mu3NiF1PxX8mgp9HXNYXlaaMk2QuZnovsiB.pDxqHScSUiW328Qkw6Y6taDp8l2Y0NRE11KgxwjISP_ZDo0HUITjkhCK73Oy9"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=910134298cdd3b5a';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\/8602795314?__cf_chl_rt_tk=7WSaa6MtzA9hVmkuQ0asz0CAK68NaGeBCYw68XtiC0s-1739244033-1.0.1.1-YNP9LHXvTD6M0taZme3oplYkmg7cwLPOgQsOPpZyhIM" + 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