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-6803152974-gov.caltech-edu.pp.ua/post/111641705934

  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-6803152974-gov.caltech-edu.pp.ua",cType: 'managed',cRay: '90fccb370fbb57be',cH: 'dnJIg4TYRc1vcpdtDwCw3WOzhC_c0VJN0HoH_m5ucFY-1739197791-1.2.1.1-a1ijFKjD8GQe2jIdsi4yTNFXLK0yeA80yU4ZG58FAqdvqurTkA.3tQsq7LgvHzx8',cUPMDTk: "\/post\/111641705934?__cf_chl_tk=yasASoGvz7.wo7ee5dJZQKhf3wrSdZ5lpon_moh7tn8-1739197791-1.0.1.1-QSlaDqzH4mKXM0kuH3ho4m_MqQGBZVpsrlh0osYYiQU",cFPWv: 'g',cITimeS: '1739197791',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/111641705934?__cf_chl_f_tk=yasASoGvz7.wo7ee5dJZQKhf3wrSdZ5lpon_moh7tn8-1739197791-1.0.1.1-QSlaDqzH4mKXM0kuH3ho4m_MqQGBZVpsrlh0osYYiQU",md: "uFl5DoVikILf3rChTeBmQjLqivF4dVUss2VmjysuYH4-1739197791-1.2.1.1-GT_mdJsWyqqC6Afe4svzlaE62fuXaQj620gL5ZynoOEsb2VasUUSSDYAdjTCdHQQ68tqFIlmoXYsvtPEcSp9vjEKl8qeecrwLIi1sSRYCmyrbJ_561vb3BdbyfDKKneMeP9sL.kLfIFXhM3WM0jGiZ5Wmt3n9nA7y7gq.ly_mvwjfW5bJuJoM0rurX3TmAmCVIhYWsH2p8m9r9XGISFw0ti0bL4Nx3ZYQs0EcXr412Mzd4Io5n_36YJ6AHF1TVuk5Gx9S3qMLX150pokfv9YoVg9oW3HKgGEj_YsKVUlD38Zs3rdSunEU1l9Wxc7o3_wYOmBTR60xHn48qX6XcwKmnxz27wFrBKu7DvoZdZ3bxFbZNp8IvpplIFitRa77xhKLYDfGmxPo5VnOsBmDMwUSlHxuCs22iNhn4tkDWIh4uW3fo16_ylBhPMNtWa9CtuucDyYsHjFpOrJ5iprrnlJUsEr1RaCGszWFGck22YP9AW28BNK0DpITE25EhV.X0gl2PkiB9bkie9vrSOhOGkUI_r..T3WGwpwzIsrBQcbfu8sBCI4EtOYKGyKZAUcIWFwmg5FQQBl4HxKHnE7f31cwp6Z7WvFfGzVqcfTJ79dshl6DGxuhsZpt6wIVJGev_VehNOhHojDocYzFy8luJw27lwgt8GPqD6Rk0WESwDh8UdQuuLZKx9wvoeJ.81FZ.pI7L8NSnLkjKPEKK99yIbJYkBQtrfEbEf36gUSmF6IYE9p187e4AGdCVkLiPYDi9_4AKDpr.JeNzn0TJ_zjf4xF2YDyLlmLaG3ym4uTNosQHjUg9j.otPeJp0sTNSTRVVknGoXJXE0RXA0G7.hC8bHQMV4nsYvGTM8.qjoX8uprPS8Z5vPSUI.ewneNaDEQAXxkRAso2DgFnlrakqedE40gbtVO7OqdZRn1sg7lMh3PXQg7tgyIWqyg9wL6D22nS7n3GXuw4OzR4Y28PnSV2FXJxQHH6GfEgMMtHJjoWSsG2PXhoQ7Bx8oKPAgyAq3fN7JKlClgBP2ubAeCZeVeIykcjcIqw_BidxHqFhP38NLRJgKt4FToQEffub0RbKPB7fP5Sp_4l6RQ53OVJ0DGqYKTuHsASynmwaF29170kwoTG9_HUh9_XQ7lcd6WfxEnMNW2zQs0gI8W7e0NhEiAxsBuKygfipfwhUbCzYgVqVrhbvy2AviWwPum5PfnSaALF4tRRKP.8PYrHo1x7yrxgWze915uLCUupJQbpqnzmPO0QiH0DQn1hywijxTYfJ0r4BrVb9GtBs5Oqt8V._m1MQ5R_jOHdxSEISEc.erfP6o5yQyWs.JrzB.dO4pfBSa0zMd_JACdCQhY9zivGuh1iIgr2reD.lCe9N6CJd45j1VQrt2aCFhFGRX0VCv82quBs9Ma0oomgkY4kgv3.VUwkqE1g2jvO17revrhVjN.0UMEv8N.uGzQoOnyjpd.nLTnWma20uAxBYSSHrvXOc_3UckU0LzdQHqUWBlTzLBiHKKN0wD0M7jbdiFCg6G8byaWznPbfSKoaA98VzC.Ol8R.XBEDB6CGC913Ov0MJzDJxnnQcBxWal06ptGIcM3vp.gpr4gC46pe6hlLDQwk27yLDDjOoVgjbzXylgWWfy27pVkMnx5d94ZlNcQRT5hWjmfDucYwNHMoGcpcarO9FLUsZAXZ2Kn7l.BWUpYs3VS6AVgkgA.5ObAKuxtZ7IUErtw0zcdOIOTBRozUh1uV.01tjN0gtu71yg5OejHz3H3C6wRX8fXqZe1Ud5qMf8Fs0k_pWuxK9Yw81aQg9cQgyXR_3rlvWds8tdfAYgq0iHDf4dVjLS2iyBSMr2oY8fjephaU_wJSNSrKEv1r06_foUv7XTJbpG3jnnfxa6WWX7V71J7h3XOmxkm7t7_4yFTRZdMACuvCU8JXZ_TWp0v5YD.85HUFO26AFSLqKONeRBlBvp7RA_Iqf1VLaIDWUTCXqdssIc5SFoni.SfTBKjATkd9ed6iCoA9wq11Scwe1pUElOa0x2TNJTLJILbKTqARSU.GoRnW0FyZaRuIaqwWbXA139gfHt.tSwf3AjSv32XzX4TKI2oFFj9wUCCrRBOOxTQaGh.2i7FJhGssRzqqv8nv4mLVlDHIvRt62jgv8.tXGBnUroEkFYOEyhZnRj2wkXSQ_ed_svUUkBSYf6y2W3ChKFV_KRIuLgsDuZehIM4xnCSC6LiQNL_cl95Tdjr57_Wj8tgMSavKFDSMPaPqrD_0js9A",mdrd: "G8gb0QPzvt_tRIhnXVaVyj4pnOq961FmvH_F1nXiCSw-1739197791-1.2.1.1-NfXinttNP5VUuns5N5oj2xwmE8YScTxZw2UacwGscxYPnYS_gSOrToe_W2BRR9p0Cm9an2pcxHmkSLvAn.1b7TSkTiBGJ4v_BC1G9GYgcT3otiByNDCRMCFqGSc4fn1AjAhLtR843sYpcOkzyGqGiJOBAxCDFQGyAD2qfUNY06yVbQicRSXcea066nwTmvpn8cR5oTC8N2mapE4BvJokno5WDmWUZy_3TFTSn09S8T2T13di9obR_1LWv1Y.g35yOmGgkIuskdTevIVNNjnjV1H8I8WeXeNzekpYmdI5bfL.E3vaLcGxfoUaTf2b_BlwLYFsHIwORBaDCi9dqUlIvnN7XZp9o4fSyOy7oJRv.VeWqNp5IMMWHXaG9f09ILlLL3UPl1tGDoyT2OY0_LtzaZvOsXdozVxuZgy2B6qzNTdom6DHzRgMnP7yDEQFve5QXqMvxGnMM2lbUuLZlxEeSZlfo5gwHfDb9UNhbaByyPsqVhXKBdAhQ6PeSUOjhSB4kjYS_4qASb3MEyCVs8uh9llHMuWkWv6w2NXCSq7JAW2TYAIK499svzFr03capZjQ3F_16kWQFcsD7xquXM2ynA0EOBp5F4uT2djdKYLkkRqYb1tt0GL6R8O_kiKwAekpRcnDuHeebD6tUk0PTLhH50STQEKO3Dsp1UDkW9qg8jYZcfFnRtHpBiHhBp3pjByg2fJVLLvxrDzeDJVXnaiQ0lEtaWEODPs3ZOI9sdO2lIVPNoTboZ76CeuX5PBG3ehG04DmKl0IPqPJ2MNbB_YdxsJPfuRhi2t9im9Rtx07F7sI_LdP112L1dGJu5shtpBMDTjT08kscXTzY2Cs.C3lE.Y1qbP9nI8.7NeE2Jr45hCgafLO.yWoIvl7TfHvcgA8bUmrFT4PIM98VJwWHayPiFGxvyF7KQt2HY5KXagEbPW2oBDCTqgSXGRuUQ55_zD0mt_qGIpjv5klbKxjU9bGbtzdafAyrlmwSOeThx5MKe6NIL803wmnLNX_uV4mXYvTTEEaHAFQXXmysokEFBcLB0RE5kQn7Gn1GntVCHkbQRlZCdIYWDIh64r4ybpLVQlSyrJH4FmHYCCVZCU3THJr289Ybp8cev1zvU9z3Hf37pWbDtkowNsabIWVwD8QWCC.FusuO3HP6q2WG2Efo5IrtnBxVSwmdMv94XJeD8_yjM.c3sjKrp1Lg6cWGASWkn9ugW7.9IGkrNZ_3lHOWGnt5mI0WPCvW9yCojokPVMQYpuF6PrFLhGYl4bVwhrsP7gktFhcE3Ip222NnYmBWJZceqvUEEr649IQDZBgF47uJTLq7nzRCEAVVfFzjfkUxe3lNDlsdPoYCdDuaB8LO_DuEWbYINiRhMaj0CXVdjUiSvGFV3SOGLY.231FHMTLh_m.3NJkeWpHATkVGMrgOmWQjBL9hp1ivfXafGR8LROZF706sz0w_10c2WuR9X2Xg.FVi0RPWJxXPfhkp2LzdOKFs14OyZXdTiAytMzoGFTDtLnLHgYqSuRbfzgfhus.2qPOqeDktTPLoQYkfhcURIWRB3Kh6sxn2PC9J.EFCBkW.gODxZ1nl5uufVmFF1bsPgsnvmMx5jyX67a7FuJUKe7Ugv_6nAqhiu3kNfh03JZ6yBl0D_LQqDNOdK2koFx24goRArw0sRzf.b8P_nDGqSVqEI.wF.Vl5DjutMfbJmCl6CZwEtPOCxc2FqqCa5hdXYu6nRK05LQVHjxHT5h2RrDSLY22s_OSTGbdf8QafNQ237S3pjCnnoSO1i4XLwYXp1vPVwFL9R4a8DmJMoSMeLahRYQfm3UEu62jOxdRZ6i1d2rsKEohyzK28raNffLCZ05mpYCVfzVvpsU7h58UQuRSdA"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=90fccb370fbb57be';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\/111641705934?__cf_chl_rt_tk=yasASoGvz7.wo7ee5dJZQKhf3wrSdZ5lpon_moh7tn8-1739197791-1.0.1.1-QSlaDqzH4mKXM0kuH3ho4m_MqQGBZVpsrlh0osYYiQU" + 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