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-7015824396-gov.caltech-edu.pp.ua/post/4592810637

  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-7015824396-gov.caltech-edu.pp.ua",cType: 'managed',cRay: '90fdc2bbbec38018',cH: 'ee7Do3hgCJu1hGOeDpR6TvhfsWKiJ6PsYa508Cc3IeE-1739207930-1.2.1.1-4.85ytptIdO53FBqMgb67zoy1f.INp_CsMKcS6uDrmpTG_46gj75JUoBVxxaGnu0',cUPMDTk: "\/post\/4592810637?__cf_chl_tk=ZkMWmUyUFLv_kmrIC7n_mraIUTl8l4aFg2qyJPFd1GI-1739207930-1.0.1.1-QQxTYpNWobPj0TT1OB70JbYmIh3B9iuYP1flsZIEeRE",cFPWv: 'g',cITimeS: '1739207930',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/4592810637?__cf_chl_f_tk=ZkMWmUyUFLv_kmrIC7n_mraIUTl8l4aFg2qyJPFd1GI-1739207930-1.0.1.1-QQxTYpNWobPj0TT1OB70JbYmIh3B9iuYP1flsZIEeRE",md: "HT5YjNFWbqoHD8O5HY1mR8UUiMzr4HIpGxjUr8_hJGQ-1739207930-1.2.1.1-gu48bXNGz.q5Usza3AVT2P6rX65xp5BS3Njc9p.z5pr8Nbbiai5N6dI02JaLDaITGTktLjLZEAc6JWEBIcfSH9SZrncIngS_IALhvtrvJAmh_MCNPtYG4OJwTCGEP36oq4A1oku9gBzRZF1cZqwHw8AI3JZyRw34D3ZK7YHQsrIpOWHZJwhev_efgUO_BJl5PPNvAKg1Hggcs8VKLASkEqb.kJHMDavzeos.3NtVIV4bQ9M4G6DzwPFOa9De52fQ_K0OIIfFXP.HXNpBiase7VoaQep3D3OM_LchkBQ3No52XKoOz1vrRAlCt5u6m3j0b3Bh.tbOOrvPqoFrRrDWH7lFuhS8dftSDIK_06zfWHFNo031Fi.eURFHDnmuZwm_uGYOIsD18z.MsJV4xI17KTDeOjU8qndylua9Z84LPzFRoJoNBxFqBtUwFmmWf7cVfiK5mx859sC3JSonAXheEtuVIBDgVE0uaTmy5dst4NILIiA2Eh0tcLWUzV3eZ2lJ9nzDbFte.mZMqyyVqIOnlTPY4fFVsWi6asIWLzl7tjKpl8Bh3S2umzAOC9DiAdOvob_tqT5ZDVGq_Z8PsNr66Mtvk43zPFxLx72hhZ_H0v4fyhcUvt.Gn5uPs6F_YXh5j788JkIay6iL4UNHfrW5F9OSMIRAW88z5PFOej5MeYwXkL7WaCoZVZui15E4Lbs1Wc2B0j5KertsUjP.H2Q7Sk3FqRaOc.IwOuMobn5sHwg_LZnrBqd9ZuV50Vll.07QGz2uxPZ3e2z2OciB1soRlCz5OM.866BZyXZ7H9yWvXfVOM5uXKkQbQcbE5mRCo3pYgBgI9KeW7O24TAaBaklZHI4tmXdaHOpt.OyYE9DWf9oTChrHGYXyqFvVGyjzPEOlfllSYKREX3SF0tRW.riYyIE089AuP3z9JLP5vr1UvuBNMMtpTqDF6Teb7loWg0Y2g0umBVcXryZ40i.WTkZDbJGOutdGQyQrLR.klorFFjyuangr.EkTcdn8MF5vopfLQWwsd2N9w_Sz.En4obQTCP09ojee.rhEGjJxRHHmvrz.aKPR9_H9o9f4.yZJdkLCnJCG_wSLqjA4L2jSYaBmYewR2OG13REkHr5zFrNZ4wWOxMMqpGxBCRYaxfFzmXmhO5B2W.wX56s48UlwOOOODAXXvPK_4_NN2gzigglyiAFgzwAOSkpVORkiT_0EadyilVdaaIVggrSPG9bfwGouwcWkJtzl.HJ6CfdMPnBTQ1K7fOf5G9852pSAtEBG9_i2BtBuwNCWBrrY0KMWZKTZfvPtHew50w0Idow33Je1SvSib.0ZWKt49U_6xYSNWTXiXxQTcmwpAfnpl1I1ecXsQkVbjec26Bb2DqbnWGYnoRMrykzsaBnuBZjRfkgIMzd806v0KhwQi55KWtyBsvilZOVUECwU_YEKfbq2_Ky39ITzy8l.K9Gk_PXMW0JxXbbXuvkrqctU4k6OSOavsg5L8szWCnQgghfAmk.QovjM4CEhRkJpvvNHirWwKy2ZsBmUC8q1b4.Q49qRe1P.o9CMjSX3fTDE5YeFpL5LFtFY6eJY9.g9elrcvxjhDMbItdo0RYow0vo8Wq11jgVoa0H4QqoYL0O.2oFX5zVosrUptSe.0rSI8BsHnIqeqUgSPudloXJK6Ev0ym1jKc5NjgJv8L9kx.Z0NSB0xj3OvGSOJAKCHorLtJJ6fto7dYTTvpyHobePwLoP9FyH1Ul_9b8dhMFS9bQGZgNK4AaGzfHUQYVthAsTIyY06gztTczr89cfHmjyxlXF3FklrEQbfpHpjnqK5GJJrq8XcoeDC3qtRU521EVUGdNzBEvCeVsaY15.oh4KIUL5rbP3kfgHofnk.PfzcgbRUneLWiH.cZA32UE.vyiix6YAmjcL8DvdFEI.Jx5rFO5wA.1V4isKro3B9Q7Umd18yez.oAy3Fmr6MOW2H5snmGgIMd4VaeIxVLEkhNoTr4ab869xm9wW2zUHEejNrMYzrNhACrzLbm7YUsd2mqLPLb1cVkm_yOJ7z0.8V0KigsQptwSy_mmM0Zdrl7hOU5rTDeTCaDrLpwptI27Ev.fyzNDfWNVc1wlGQF6sq8m4UdSz78FcFtLu8QpiyJiQyxfsNMD0WSJQ2UnzPE1LH8pW0U5BcmBw1gNi7PDQmO7zz5xZluOsb19nNIzFCLNjIYCn7ML.fJodVH8OyZP3O9N3SwJR616DytfjTCV5tVs4uqhXtVqMFjaMcoXpQ",mdrd: "TMzz.xefDfYmXS18h4eHGQP3AfpFvgnOztVA6s3YDqY-1739207930-1.2.1.1-vD7ESP7LxE8F7FmEtZtchc00dBManJQMYGISinHFutLvxi1Fhi6D5XnCih5J0ZRBB4NMbUGMk81C22jMMDZnRZXBC.OzWaVAICDa5wRxp2U9aS21Pj60AEcDoR5t_Z_u2CPbEOU1UkUFULPO48_ryELzbxlsCxmfUflwmfK3kCQ7j1R4o9d4OzhJcTG7t2F.CZep4aIaMRdaT76CGe7sRUwhHNk3veXaTpCyolnKuimqKlxT0fkOqMLKx_eejOZ6zspHISCTmIcyBlpRYOqW_3p5FPXOFoI5lLXyh5kpVIM0hDye.Q2oSNZFR.DZHT3qEEtvJAHJtXSpLdLSBqocekwAK1ZlXZ.Qa88Xgc6idPK7SS2iPHu2VwwtJyc_KGny9fFvO2V7aJoUekWyR8J6bVgcM2HGcqKTZnk5l1bsibmf3S4.KSOLVCWJyMwQ9C4iFr2F0ExEhUOoYaECeCgS8cZONymNK8sDN4FWTCzMQ_N83KT7ZLlG2Y4Bs9ESRw_M88VSm5X3idi_QAxkm2jHhzALBWAt5mQqRYzrro1DJsbIw..lz2KXb4VwFT1yo4ZWlLYYBExmNyB4WfHzAAn8zOs2YfjWdISt2r14gT9YrmQtwyiBTS9EsK5pfCxMhtGP38XMai2HUcnrwdwhw2ZrfvfcngB2fV17fOPkeWbudBodM177NLdFvTvxomzHkUEzEDyd2MIvdC.g0qMMP9blOh1isOswN6d5F24zMFRz_RzARz3iY7bJAcVMu4ycioCV7x3QMyok_EjwayiaB1TvrRDjnTRCxhc57mocsalH2iZBDd74Pw7q1n_qjMilo7BG.N4uL7CWicon7TDpGAXAQw2bi0S5BkqqzatnuQBOL9f_DdxdgAgkzbBxsF18s0upEeZl1lyNmXGLd9Uw9iwoFsZCtmlNkHYw71Sl7akfEgnFKOjum2xtjN3j2DIDp7JRpqO5K15MRHWoEEiq2x8bh3c6NRD9ytry8YtRFWv_ejbI9AddQ46A_AyqHdydclyDV.b4w.ozYUmJ_inepRnDVYAc0JmlK.A2zFzGMB5aPSgkwRZhPg370VRXjTj4f9k5fePS7N7JTI_LZKKnPJZ.tnEaKZ4qxVXVhmXbv7ZR553HGWLHYGe087IRiHuXA3NBzhDVOSAavl7j8oodGFz6ZFmMbS2OVaBsaclwkdNCglZo3J3KSsimeX.JVRzsvjUgrTbIGE0sVSeTWSTYKCyIrLUjK4s3MhIEehVeSPJXMJMgioqppSazvit2ewYAJFKkxLBzj5iZJSH2T0nhdZYBwslz_N.wdRug.x5DEdeP98zmTcOYzW8sy0tUM2yqri4sWbvsmszO_SlF.A.J4w4mZfCzhn85kpAlneA9mFxUmtjxKx19bdfbLT79WBYiPoP9A_8quZHLUMkffS_k.JPFj5TZ3eW3hoftvqkdIlWmsm9DDiKx7YHfS0vX9v7KbAvzXTMJm190dsBcAJn1B5i7trff1ORWW3gXQBlqfm.IM3Af.bkktX52uqa80HNl0tU_tmunnKco8...a0rlW8KzvcvZfOQUTvjl4JiFoOzKWZTYg6FtJtaDweeUV_dRXX9qeEw_OCA58ziB9wOqgnHXA.nKul_YiRCYFZbt47gYEBI5CWQutELa5OJcEVJ8AZSsSNpQJl1QyiRmVr5lbzO6KhFCkeHpJZPb1Pg5UACMVlT49wGr5HGBtUNS4h4rqXnME72cDW6wSjQyDgxpdAc07W5bPOXGNGQdSpByplt9AL2_FDMl6CI5VQJBgfBzFJGgu84l5IRstwwL0EAqxhW.60_j5KfGcRMw8tQpNMv7G20"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=90fdc2bbbec38018';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\/4592810637?__cf_chl_rt_tk=ZkMWmUyUFLv_kmrIC7n_mraIUTl8l4aFg2qyJPFd1GI-1739207930-1.0.1.1-QQxTYpNWobPj0TT1OB70JbYmIh3B9iuYP1flsZIEeRE" + 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