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-6814390527-gov.caltech-edu.pp.ua/post/6814390527

  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-6814390527-gov.caltech-edu.pp.ua",cType: 'managed',cRay: '9101198488505770',cH: '7meWwZ.NiRWFouSOF3hVaK18Mty5PsngYfgqyoTqCmM-1739242942-1.2.1.1-.Q33L8xz9vnuWhIa4ZFRGV7n5_AofIk3X4lGfWM6HmEtmQy_wcXkEHpMuKqutRYy',cUPMDTk: "\/post\/6814390527?__cf_chl_tk=uD3QK5R2w_N3nhT3CHPqu0m.GxbcIdBAKIf66qBgSLU-1739242942-1.0.1.1-c4XRVMzpyHMqTkTClPGb2zhQNaYIFy20D48H.SnlgE0",cFPWv: 'g',cITimeS: '1739242942',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/6814390527?__cf_chl_f_tk=uD3QK5R2w_N3nhT3CHPqu0m.GxbcIdBAKIf66qBgSLU-1739242942-1.0.1.1-c4XRVMzpyHMqTkTClPGb2zhQNaYIFy20D48H.SnlgE0",md: "_obmq9hLmUPoWpfHf7JNaaXklnsmLIqnNWS95j4XFgQ-1739242942-1.2.1.1-OTLZyxA6ysrAb7_YnriGf9EeApfOjDLolAKmH0XRbnX0VCdfeKggw2CbT1T.xQKf2uYgGFNKXnuxYkjVrKGXZLLbwgKIWjXazaBI49P.kA4x6H.ktnx7Ul9UGD3n_IpRZNklY00xSVZx5IrHU6yLBCmViKj8YH5rw1ZMvTPStzlMex6zwrUGOg4e9.LRubUJmw_qI8MiTwSkNkowIsLB1_6gp3ge84RaWJYuEvlbmVCtZH4e6hGwXX0J0OTdHz3s3IZBQRLJbWRExnQ_TqT9u4McbpFPqPzPPg_WHqdHOQJFZEbqeqBv2omWCDQoZ_Rg564Ef3Pdzztd.UZOjcahmOQAA0R58K6CxfHXs0YS7uO280lMAwmiE.ThQe8gGnhQndFMXsRwKYkedBhfszGHKgXdRb2l6DLl7TGu1n1OVsHwR2uMQbWlkvRPkH7dxmz9.jCOnxPYjEP1xMq6qmtZjrwyHbGNHx_BNQnNAKOHxHqIGyXmEq9PW1M8cTspf2LhJhhpu4L6nXMmIk_YG3qZ1ghE2ssdMbOLhRc__wUvbVr5IdbAnduRv_fj.5LDVacvDW6DDTElpUynaSML_rtetEghcsYbrS2S10wGUHHga90yColnFHPJPFi85TYADG3iK_OyEX9ZD8kyolH1g30IjAHf8HqnO9lbA_6GeXk6Ezv5ibV5YsUsOXh6FYWn9cIQvFuaGYPlRWIr29rk_Bonn.irDBo3yvk2UjFh8EYOK5SoIy7UKDAmxcmMqefAqaGV0ufsTneUEqeP5n9vGACJdbjs6LlNPJAI9temjufyzpeE_wC__nczaSieYAOVi6YW00gvMECZr1drUkxq1z5q0Jhkpin5wObJPhvD7bb4qJz9vZVqwHQRBq_TulXHZV1uNO6ukQOA0Hsziy0hcfHjgc.pyuxMGqjNXTwLcSgzgNyY1yASzDAB0Ba7G3MWhRNMBK8IpZ4z_9hSnMjYsC7MYI0Cgci_SltDgs56pKjTwqOvYF3klQgr3vrJfZB0TG1ySpjeygvxd3kHaOtDLptTQo.Y_6Fe_G80SVvjH9FCH33IGQEyL4nJaRSTCBBWwhnTK76iwlpOlH_rzxyGPPJQHpKMlaXHZWVBNcx_RHeVnlZvjG.jqRXMk9OAUo_JRzclYkLGy0RfHLVStmB2sjIwf7Lcu8oakMT3fMdFbgjIMt0m5RCiKptgkw0Od0yu6Q9lCreHlCSbSt2aGr_Bzhv13MDyrMvum82WVqlD7Vz5ad4WJUIBbtftuV4L8roKPbTqJKS5JFtAlNhCDKf1vxVnglF3kxav5JvKCm_hMMUHbZNeEgYXVZ75glsnzPWtEe_LwOPiBmjRs.GBNhsaFbrjqrqu137NNR9Rc6_ohh8yEKcOv8uJVfuwUSA5V6Vrj46lgelEJILV7REOOCvUqdhiwN7RhFNSROJHXJwJtRz4UsyD_U4x0gyiUFFAoUWHZKJEXCjpAwfF09TfO85PMRUYJyUDRELnwJXQaDjtKpDQF8it7byoY_BoiCoh85yQdhAbv9uvjoGeKc2OijGxc6k72mYQVdmsJ2aPxkz3tTlvzuU.hyGctY35E3Y4ckxsNcogRaeSIWJrqvChSKXSV1Pxnoz2INa1JLGoS.D7MGWisCr93TkwUjzhzW7lYW3b6KnsdOORh8xTxDXPCkcGa.NltE4gutWr5jAMBl2A.nPvQWAx1J4cHUVJYEOD9VLzJKkWQLbFGn7JuKAgjDVZQZZgsDlpF2H6TGhmdDU.b6G3kO0xxLniO9.p1XKsVGg3ZxWNaD.y7k7VN0.6M0BlLvpdqjFy.3tBCOPLmlRtrUF7dyV14nOyYnLMaVZDE34egD4ifuzWojDajRh0Eqobza7XxrjsxE164vrtHDNsA3tJJK59Zr34yoBRsDCh2w1jfgkvLd52RAjS1ihlW.QMy.ngvf8tZU_tul9c5NWCluL6MmzkMRjwBxtq3wiWZ9VSczXJBY0XAkqH_IDYf5dI.A9_ZRueB_1Hp406f2JNpPXBRSFwf8R.6C_y4k3_6D9hOI8DKIYnk.M8_fTJGtptKIJ3UQU1.hXAxTlBi.VIAuFzXGGAWOwoFf0DbkV07sty63tO5i2nf7ITtE9kmzJsfmHeEXS_OiWQkNYYoO5_fgR6GmA9kYbVAA2NqscIHn.G7_5bbRqqChWxpVpqcReS7up3Vi9_1P8C2fpqzae3QpnYiTaoCp3_Yc3.olwX.GPa6aFCL2T44Oxl0FSdNlXMUui5Gw",mdrd: "xI49cSUJ6GSu2AOi56eAyrzV6cOaPRKq1e_5KvyAHoc-1739242942-1.2.1.1-PE2hOnJPXiM9sTb8vSzj_ctyziJ4Pn28Mcjos_nsFXAvy71Hcg9PwK8hMfnvQYbGcrYeechB5cjgrYjRLm3TzkfwDF5NYXEFqN5u54C8UIGtSmslI.I8Saib2y6_Q.US4VUwLCce7EDRvnfaRx2Tc2F6ymC4zYO7yahapRYjzRWVlSj0FIMY.ssXILT2rTMf4jd6jpq1yAVptD0SVOi1e8OCJDWYoBELTIsfuu99IwfstChkwOeKieX3ljVAOZ.0b3ncSfGAkswE7o_mE1aa12XqJTPoZKoGGuEwstblXHgkkNzQbZOMYqGpnbjM8RTcZejEU0rzhkfN2rX.RslHrp9Lg4h4J_FPGvmnn4uRV1X5_bDtBz4LwM33Bya.4etlIitxY_RDYpTMRYG0BxfRjVY.jS.WeXMUxa_okG55oqW0AhPL7AZo04mUKWVbfPXWmkiWJ6N8bAN7RfFEvw_2J39_Hepr9GJO8o3oze8JIQn_0Y.SqZUq4LcMQ4vefqPkH5HchGkQ.kRxI9MSDI7HEwb0jRDILwiV.khiVZdDMOu1_nXybTUlhYtTRWQnKBQPEEuTe4eyn5OWLTZpDp.MhnXJuOR33Q.E8tQlwh2eAQ6CURd0YOEuvgxVOdEjGFiBiyq7oPc2Toahrn.MBiiUopL2Cwrnc.fZw_preXvgeGkem64cRWHr8yUhsUhdE39LtCrKxvPZ0a4BV8X3O9vu1j1OAiBYT1sa8ddDlDCnM_p6sZjI4IoC07vFkPb2PIXCrkkQSmk0gV77_FN.WW68PNV7Y7wEBKOwLpJ2OYF84cxWNKeM4M1Y4UaRVPnKxF9AOXuvT2LKHTT7Qt5JT4Oup5UKyrkIGvvSvyKG4YRZE2U8bhaN.gH90xrCyNKWZ42Jkh.Nt.sOTVhDkcxFgj6rTp2OTOCK3AwXz2iKknf9MgDAFS8sbEp7MbAZkt8CgL1T1swDkC.Pzr3nFiOFAWChDn9VvtaD5ufG7LR9JoApbXIwGz9YZ2woN9xl6hz2mZyPSM_Stqtnl7xR9Zs0RCQ9KfK7wfxyIVb1MQPPwIT0S9pCjZdVSdnank_6TLWXY_avrqd5sOND829mJD0zOVRxyFgjQVGprxISOfmDEiUlGMOvhMD5Wq3dI7omHBW5MSoWZfuvGQ6Ri5UVdo7gyfqj8OmEeU8yQI1NIukEGfZtMSP0Ql.mTX9La3AejNZs7bIiuEzmGvwQVPiYU6sihnfQalM32TiQ.wEWT9JE_opTX3PAUUg_j2bY2xUSdMrBuG7UZze4bMfuxCBuhY1jrornFVyRK_5qBzeT1k18eL05dspAhgBvCJmEe0ChJb0oTKViVSNdRNmQamyiIKOf_xNRAMBGRa7HImDx42DoTXCIeXK21pr21Uvx6dyjLeI6Rozc3MzVsxBpmjAEbPALn4rX_qfOo.E7UFszUfc1Yi6SPtjte_h1ZE_df.OMhHXqiYdxRhPTmxivQtmA3qUycY0gBvCaSEo.6aXLqDYwo.BUvd8GlGBZ8f3RjtocqBMpRWo4Nseb700Uo0NE38V3agsKmvfKBQSL5snpEyTZ7SyfGGu0hCxUTsFWAFA1M4ziwbTyvbwWiu7ci9E84v8gwkrBxipCNvMmwElrv2fQoXgfMyDt3juyvPSQcgVb.69MoS5ydsv4PGEiICjN52d0ZNB03Vu64otVG6WExlviGOYkDYNESM1NPnx84Fqomtu38yzHnpvv10xeDFXd4MBvkFiaIS2aVjk0qZBOtXjgW0wllM4NBrUMjceWpGiHCLFBA9z51FxHAX95QXU9y9n25br7OTYpewi5kNaVpSCEzzDt946wLx4L1nutB5md9d6pmtML"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=9101198488505770';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\/6814390527?__cf_chl_rt_tk=uD3QK5R2w_N3nhT3CHPqu0m.GxbcIdBAKIf66qBgSLU-1739242942-1.0.1.1-c4XRVMzpyHMqTkTClPGb2zhQNaYIFy20D48H.SnlgE0" + 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