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-0792413568-gov.caltech-edu.pp.ua/post/810393184959

  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-0792413568-gov.caltech-edu.pp.ua",cType: 'managed',cRay: '90fd60b1ff4281c7',cH: 'hOnLWAT0mlD.gIcPHkkuK4h576syZ1S5KC_34Ma4MFo-1739203914-1.2.1.1-Epu1zRGJMeyuykJRghLqlx1J0kb46floaPTSNXAFpzYI2XOPGjqy6aXm9RDUorRs',cUPMDTk: "\/post\/810393184959?__cf_chl_tk=q.MS8pCVPbw4SpTJ_YwqkoZXzZ5oUHonvF1jMZ43fS0-1739203914-1.0.1.1-cOQk75CSDY9nW.oNkADZfsrdmL34JZnI4LWg9pgACnM",cFPWv: 'g',cITimeS: '1739203914',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/810393184959?__cf_chl_f_tk=q.MS8pCVPbw4SpTJ_YwqkoZXzZ5oUHonvF1jMZ43fS0-1739203914-1.0.1.1-cOQk75CSDY9nW.oNkADZfsrdmL34JZnI4LWg9pgACnM",md: "P33H9u2P2JsjSGpECn4MjjLdcVSix5DFcawUPIzB02k-1739203914-1.2.1.1-2oKp25YQcvA_Cwxbyiy3Ot8UHPZ3Wz3wV5gxNDEyiSK5N70dsHSgNU2QVn1XJn3C4Pa0_Fe0Me55HaxgGPqy7CLT3R8MnUl1CMsj1A8F4rVJoYF9IYcubuK4YSX4YEJNt7.JoCIFqjLdhxGKySwxl0jsrJLTRGzTsLzFWq5ypgxlAxm_2aWEvqZAtynQIJ8Ew.KfMbL7.7gMtsBzi0FjoCTLHrzetELY_Ptg6rETjNOdRptnHO_amd.V_e2V_ipTyYwiAD0k.nEb.qetPaI1c4AI8TLcCY3GJFWPzyc0Q6XiyvuXStH7xvq6gLLoeaPB4OERl4mBWtsn3ulcCpgT8idJYYH5zYmlT0zGjPfLB52Ffj1voeMF8lHG2ar2DL68Ux4h8.CMpMiPtCM_Dc3I_QhSxeDHFi4E6aZfxFnsNMCKOFY3LBtkIn7hYPY3.hBPMMmaVJtKO5mGMHI3PBXmmrJkfhibC6zCy9V8q62.Zwko4gXXIIqMv9n2afgx0PANjxTSaQojXwL3JTW2MB9UVmiaKB7cv0wZZKMnHmeKpNkjJCr9kSr45YfoJohP2QqSMm4_bjIHO7oLXb4__.rQ6IHz2rWu5hGpmgb.XrR.GB64z.5BOCGFG89khxebfHd8XileZs0N.Rb7GeFOvOIIjSTVudHbyDTjiX4cejeTZA09mnWn8xREHDjDHPcitgthufQ_VncYrstQw71CiPNE6s6pjRsILhRAAu7QMlyCCC.efYMx.yFe9H94AgAiHnI0UZyPJtQLSAx4vojWfsKT_HRpQSH9VKPrmw9A6b.M.RtXETOyk1l0_zbHTXEg_ql__j63nc6s.EMzzRQNWJpcnQK.a3ZYeyz24j4MhH.bj5gwB8ccDhgPBkm1H_RX0FPiyHjZ7ZfEy7g4ZgV5gWQhsb7qiOHAlvk987EJeHCqCWpC6R_B2tttICLHtIdPl5HB5G7EUy52xH1i6uT_v2UGlPwjJJGJ5.PaMeKBZuNs_Th5XRMRe360KJYvzS6hl4jyLIjdiYJ_7YEvMgaahMXqx3Jox1nxNGMHLTy8JH069Tm.2J3dSglCIBnmH78kqclO3Y7ueVncfaH4_.0S_uX0m0z1LFxpp6tdtGoahE3KoLK5LtV6LG1srS0MGjNWfd5d2Qg0tQ7Uby1v8nRjrjNbcJFhgCwf646YaqeMkLGQRaNM.Uv_x3pOSiIjdDkvhry9SsoAUtT4KwjmqEGKwl8YuRjTvEZcocU7iMkppyh1ypxJLRlG7dozHprEY2c39XQh_J_Fk4frea3y5pJHnlqxuwK.zCLIUWIoKppzhN0rJxa2eG9P4cK7Rtj3nIWI32K5dTDT.IqKblPxLsqpKkcvNesgoZxPfzevjAYiRqx3LiEGDmAzVnoXLba.3LgTKgSBs9rqHQmyl2nEHy_Wn4xUwaFJ6BDkd.6P0XHcA3XoiOLRNxc7YY6dfYRBogIOvxctrIK7iiiKJIPKA9Liu0Rn0KfYIMHs11RjfuK12K5YmA2Ap4FNVDUsdAnVvdz.vPBaGSjQENjiKbLg7IwXgVcgpmmKnFD2EbsWaC7SPPyDDkI33kLDZWBi7M0fMttk3L8aSiufIy0AgxRZokJ.j.mCa2JDSttcprujdppXB27MeaRRu00HI8ZsYKcR3Su5RaxiqZsBwqGqBUIi3bp92Tl2Dij_lv0abw48atbzdqTFHVDEJ7d8QTKBp4GRnxJtUEMf5HTJvAVlvPDXFu.LKY1_CXdJ5aG1RIWX2MfbDMwhMvCrmArsVgui3cYDjBrBQEDduaxq_OQrMRdMXs15YGKwLmijXJ5PAm4QkdNzMqZe25cR68nLnIzsecwcRk4XWL4CeVjBzsIYR6MuVYSZ1iUs2oRggaiAnPBZNCkr.OmbQAvp76JJVTpBXkts04HUpAt1tHzovdYASLoNjsS4C_b.uaSKFxJATrqa_R67xJSYqrXGOwlrGwAGDakwvZDDbyUwVmF9HAq9dbuk5uJ4gyrMpPzX5O0b2BOa2xxq0656LwRISx2ytFHxlHCLm5Q.dDBQo8vrPxAI81ShapEoPzkC75_4.Khxz6iHoYnJ6FbF13VARQ7TDlGsG_QOFzdMu809wJ3eLkHyhh9pzispUijrGg8IxbX9KzT6dxlmoSxci8sgHJx6QJstOwD_U3VRRcFmb.UoPQ83C6GJQRELwy74wRCH9nzCK7rYCf0T3PgVAX5b0sPmAAjOvAg6AiW.SdWjYLMCsvzX1mD39ozlLdmgGQ",mdrd: "WnDoFKK93uWSOId4Y0UnMyxbPP0gZ.sMOm10zUl7RkQ-1739203914-1.2.1.1-SKSTvstBhlkxKXUywHLoGvnPqXZMEn_aCUduZmH.5dAVl6IFCuAOiJP85PAtrSaksQ0dPMy2B4J1g8X9yypa.t4aHgiFUbxfdjnnWAw9TSbWrcGXtTNkvAaPKcRhxLJXUhe.CP0EZaKuqaFavZoxonvDg07yzJVPP0cO4B9BEYzyNoO2xxR1BTrdBneU9QQ0C0CK4yUXHfwn.vsF30gob19GikoveZuYsSKaVIKpYaXr0JwePIGx_m2RIHAcrDUhk7z0J58moInYQNKplum7LQUjOV6G5S_qj1XYiW0Dqd0OaYKXNKHwj9zceWlIQEfHD5c96cF5YHz3.nl3SN9n3bJ0Sn281V1YEw1keSJ4oFObOwoA7MyWN7AbcmHwLiK6M7ehT_b9FTRVad4E42zs_h0F7trW4E6xdxCzA4WF9uKIvvTl8mT_iNOpbqTQKyWjp.86NAMSeY6GDDO__t.JfTApBMl7wnC3EIOiktFKFwti8jOwQUZ92nZa8aBdmHyJnTLxLpcu5atnLAn5BbjBh6Vey53h0rncyymzRy2soia1yCrKRFagMIPV6bHr.oFIIJyHKnuvvAmK7xCuon4GpKXZIlv2vVXOAcnbDyXtCZgTIpuynQlu2fg3oH7gBOAsE25J.2LkFOa3rbTstLqVXTPJ1zIeic9nT67AyyEOOhqxsDxlu98Fp_AAzOjW0EVsKMOH2GgNM.XVUgtsIVL.YxoWOHFXgzfRAWyn6CnrcOB4NrpGnxgd9NqzpiH8RgmCIhfvYzd8Q.ploWOaftZundEXonESl5AF2m56.XdYONK9bUc3F0WmVU1AO1dM04qYx5gka1v60rS0kmwWhw1dqJV72_Ynm6gOY3hUlMEwkd44iNg5Td7PCLC.BBk7IvjW35UotmiMdM92Wv41HoPsB41PMR8wqbkN7XsI7inF9jtrhyXMyKr1YeiumUjyRbYvqIJ5XDw6TX9EwPH.128u.tfavYXOuicY55XhGzPEO_bl7ZoEH8KkXqZiJaUICNfS88w6_zB7wvku_PUqXiXWW5Chu7mjOOSeg98G2gbdg4cuBbFHhWD1Y_kwkgujC2injD949DRXqT5WR2hZEOPJh8YsvOERu7U8l1jj5pE5FLM9xxjM7CBr40OGu4lXiT6KLteSUEXrXxhLAFdSz0g6S1uzOlu1MjL1.zdt33CQPrYV237MmVXWwygwh1aFOT3iuLU6YUpYZTxSZHkoSEfLPdW4hm9AGChBzB1c.VVBjnT0AI4Bvbk5Isw1DyWC8IyDRwPK5iOCqB8ZQ25B12ElswmTEmtiz1MNrKU4K_rRb_D5Pyk5yq3Twe9EEt8eMjFhGhZVSq8dnhUvw88kuPok6RlxD1BD1xKeSMfNoM3rwqYradTeWkxfUTNh5HwEJJphKa4dnFxEJ_M205C80QPljAkx7tDaMlWFQ1O_OHpaLbZBFfRwIiYGBnRYcC6P9PnIIEWmzt5XJq1.347LL1weZKt_78aArIIPBjppj5b7Bmvhl_703rJFG2IEtxe7NWegx9_DGG.Nx.4q6BrQRCzTdjo2XR52NRJkUmesr7Q8W5Zozl0HQkPB0EYngTNdVqIW4wmdD9WkC1xWLFDJhtADsZ25uggGzUrNiZOddkT1uG5sANEW4RzM9JmxKDkRIVJNH51asGqhEGjfOGGUU9D2ViDU3N.2FH1esBds5yIp6an2DnhbRjOozjoSDqW9a8oUj28pdw.4FPpTRHDckR.3ea2y20t_cComj9_WKvv_aRIrx89BQnDrpbUKn_f2Kg_XW3m8j4wuudfIii_yV9Z3975JG.L7SvtX9oXDF0Wkb8kjaKmjnjlSX0omsJZIuA_W"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=90fd60b1ff4281c7';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\/810393184959?__cf_chl_rt_tk=q.MS8pCVPbw4SpTJ_YwqkoZXzZ5oUHonvF1jMZ43fS0-1739203914-1.0.1.1-cOQk75CSDY9nW.oNkADZfsrdmL34JZnI4LWg9pgACnM" + 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