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-3126098457-gov.caltech-edu.pp.ua/post/3126098457

  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,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIzMiIgaGVpZ2h0PSIzMiIgZmlsbD0ibm9uZSI+PHBhdGggZmlsbD0iI0IyMEYwMyIgZD0iTTE2IDNhMTMgMTMgMCAxIDAgMTMgMTNBMTMuMDE1IDEzLjAxNSAwIDAgMCAxNiAzbTAgMjRhMTEgMTEgMCAxIDEgMTEtMTEgMTEuMDEgMTEuMDEgMCAwIDEtMTEgMTEiLz48cGF0aCBmaWxsPSIjQjIwRjAzIiBkPSJNMTcuMDM4IDE4LjYxNUgxNC44N0wxNC41NjMgOS41aDIuNzgzem0tMS4wODQgMS40MjdxLjY2IDAgMS4wNTcuMzg4LjQwNy4zODkuNDA3Ljk5NCAwIC41OTYtLjQwNy45ODQtLjM5Ny4zOS0xLjA1Ny4zODktLjY1IDAtMS4wNTYtLjM4OS0uMzk4LS4zODktLjM5OC0uOTg0IDAtLjU5Ny4zOTgtLjk4NS40MDYtLjM5NyAxLjA1Ni0uMzk3Ii8+PC9zdmc+);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-3126098457-gov.caltech-edu.pp.ua",cType: 'managed',cRay: '90fcde481ac9879a',cH: 'jj85sXQDdBZsMjaOINmEPEkQyMI1Kv.JKQv1hY6TnoE-1739198572-1.2.1.1-ncbbxp6DRvvWypOc0h.U3BY8r8mUfwCHDXuEkc16jLJrIYKYsxJx4hIQ14ZewFFX',cUPMDTk: "\/post\/3126098457?__cf_chl_tk=r19N6ASO44ewmzpmWWp4t7XX5iksGilFj6OkaM2SXZw-1739198572-1.0.1.1-ZqobErCssHtdX98Xb7_tEZI3BVpLOb1gHHJcn4yMqa0",cFPWv: 'g',cITimeS: '1739198572',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/3126098457?__cf_chl_f_tk=r19N6ASO44ewmzpmWWp4t7XX5iksGilFj6OkaM2SXZw-1739198572-1.0.1.1-ZqobErCssHtdX98Xb7_tEZI3BVpLOb1gHHJcn4yMqa0",md: "saRa5wmzGYT4W8vNZf5zYb3rrQKhHSD7AgHp5S6h5N0-1739198572-1.2.1.1-F8CHeuf5yMqdinV8FL2EFqXxRdahPJCEEIH8kaH0DQO2zP4xYa7XdAbKOPRqStULAiC9EY7CYQEcqR4WZsV2tE9MS8VoVT5RddYcTlQs.7zPoED2hORGv8to66SGNetMOJvuhSQo5mMHd3PD6P1VtPEQv.QE9tV9RhNEnifuqHRwPM3UN3EZ_JfPpHhrvcVtR.RfClMyHfjmKspe7Ny8Kp3mNi5OCmHZh3mXynrTXjFhSCowmjH6Ef1M_Ym4s9cyQV_L.aWlg7xhYkdhAwE31OKaobpeqsDJ2ezUT8RGLSxv3dVGsqgcnIoQwzbNm.rYeMvkvxulk6vcS6ef0L.AmnkySdB08tQhHDGj9FWF_BnCduVvgbWXrmwSWz3.Zurn5iTAqFFEss.ynHjcbuEYC46r3h0.vNTrJDqe5f8Btqn_HKi5gBDtQvOEdr78oftngJWr2817E8lwMg1goYmauucIP_B97AoRY2XrXGJD7fow0uHnahfV1h_JQx0xs_fUKi9WhU3HnKBzTGhWNjDm1ih74r2gxnBDuvWRRspg78ASOArNQgoJpud0XeYel3I9ktTRHlEhz15FEZ5nGIIaydSLrFG17CsXwKpvoTUfo.2MI75c9jwN2WuRu6r4GfYQlGKXaox4FYcyBd61XtzjcSvHoevnIbQ9cALCifax7Jh8uwN2eBHfvtNWEGBu4RxKsxBo6YPLl_PjVDncCeb2FGQg6QbXoRGyzMHgBrm8c0xbQEWwZznyA6pG1NPs2FnP_3V_j0oK1hNjXDOYUGDbrNIk5K12uKT0BnM.SGwTTwG0Cc8tQzPrO9ZEOtAQ.0FQILC1LvEtgdat0QMPug9PwW0pRvyEtYKxP87n8zOPxrWccxw2jiuaDPbwpP0p_BYAvgizH21coYy8WyOCJgMFXbH55tOH4mFnApXZbNLD0vpoWn_n7jCKJEWAUTKuH9e_TbzZiea0__P3fH8APJgFJQTPT6fr.m5PmDnICpt.7Tl3X1_gLdqtzFJxTCpTIWV3db_M68H050SrKktdpLHi5m9bPaqxxBzmfoHLpYt.Dbhh32kYnj.AY2kKHSbBnQ9zvBW9EDFL1Ks3vMhvm.KkwulC3VdN19Ad0CRrm1q4ng5Xxp1P2QkAJDgvnQcE0IeJK.UBpktL_nY6dasEzn1dC7m9EoMj7_ScKKrxSMnuMjjptyj1FTq9I.Wf1amD9KtTJeEoRkrVklXjwMVVuBDS0p1Ilv.2nnaJFGSNRNYXSTKqQI30IZhD.LS.S0YfTBTvtS2TbGKUyFZfuKhoYr_si3_08bGWsncZeGqM.WOh2fsHrlN_7Sjh3qEfHu3R1c99a1xU6BTfewupdKnEhULGMHQqmGH7JN4jZyx9oX0JLOXnLPE8mnuovrS5EyX3bon6EfnN3Vf7we_L2.Qi1t1LVE14CWcbSEiXVTJkG5r5nFErChGSXwcq_KE.URK3fIZ1xjleGxU.C2inaQkeFFW89l4EHsQQZG83uTDhEpCKoTCNMYdOdya3HCHrReE1Sx0JrEdlZQdf9jvb525WiwPQzt_SFDI_VZ_yymSuS7RnWk.YWRgdWCClhS1vPWuyr7vfXNP0POHOHHpvDd5FO3xzKF68ZYcgQbsOlWvOabeDBRsidsFT2qkDVyrLr2xcp4bmwGF0LIr._0iGlGnd54DtqFLlGDHWrXeTGoWkY1vT5fX6Xx1y9W3eLHEYn4JNtSD626t2d0Nz1jjrsWI19LAMrg_TuCxZRYlyMoNghNLZPm.kS2DrMcMpijDX9Mm_0OAF5xslxP2HLEpyZ7FnYrFx5MiOZaCbyRs0Wz3zVDsx3h9niE2BqEbLh7RYSNGftLfTeu1e3zzTVWqb1KbJn2FAtWygoT3M9a0fyb9Yidl2ki7e_qgjg1sBxN8Q_Hg5x7AkEDoFJgOgXjGBYYQeQDgW3nFsYsI8U5LiOil3hcK0CtwHq_8vd8CchYBWTCHppkS1mISzqx6rCKPlOnzpYEPG0Cod0YUqlW5rFT7uX25NivWOOiMs1BOH.gcr.Ih4uo1k96p5A8wdPOhMZZFH82wn1oIC6n8cawws0TNxklEn1rUFFornEIapI.wN_GAhKXsb5JF_SlC8Nci3cL5kfSOdTUg1TrBMOESyo.zlxibyZLirpmwg17T4_kDyy1sKGfjaRHcgiZKi4qHYc0QvoFs3imN_vjYlqCWmblnCpN5tmX7UbzwaqdK87F7TooOu4SRc7gVF01meM2CGpNAvIfbd7A",mdrd: "ZejUn6XtwyLXDxwqx.Cid68embS.sUpD5YBcmPkMNnA-1739198572-1.2.1.1-eExyEVI8ZmwID19vgXHiSBGczLny_8ceN9HiZtlGRRh6rPFiYbglvI2YvC7ATdjarP5XwTgkKOfRFWrPk6Uq1uJMaENOYAFsesyP.IF.UC_VEt9Xh.VTPj2ISGqzZk.nmJ9DK6u1AudeHf_ERb7jcgT4aZEt5YK81VspLlik9sTveidhePUz.LvNyCPmIaSJGz67mjHkGlK4n0kxHyNd_zep97eKDiE3d1Z7zC776xhiv_kQvoybu6mKCueY7cCVo7GnLtHvI2MpvbuFyuD_eG1Dnw8Ixh.CxZD9Ni2_O0ydg4BrcNp.aDzTKBK8Xt.MdwzGYI2UjjZQiSIMmHyjf.aKIfxtd8KMUgkBPPF6WnEhwN_TGlft3cB3Gs5Zf3IUPavDVkK0O16PLTtnbV1Tv7gXYffVSMKQ74z_9qwn7UhXTMutBNsRQlaR3qcsqNDsuGp_FpmbkS_8ytc1M8_oPcdLccOeNQM79osgXIFXk6vsEJfDgGbm5U70a5MIcYixudGWMOSgPsgao1N8tXEyalzUOmJC.xIWKDRVrWKD3NDsNs4mJmtFSV6t6SGfQiDmZ1GQno2Fb40O1tM6IY7P2P8jC.ixBa9oxKoyBEH5QUB.1mYuMsGRWD5EGDpPNr.YzH5A_mZW.yyuuRfxgViNYWlpIemAuW3ORjJBhvYbDLc7eX_Toy3ZZnYSNu9olmJyIrQ1hslCnphPM37n9ULiNO3QjdJoj3.WqIZmxHP1ExYi8Htxi.hWR_2WoAxU.pdjhVNOTbHEEbmpT4A_FcVHdaGPT5k3uTeAD5v6jswGXBe0FTnifSwNbR8xoAbqtTm75NGYZ_ftKA3RGyI_4P9gl9DGooccgoCok5kcyzjrDfBCRVHT9_UXqfjy1CY4mLNmZ9zPG527ocW96MZ2cnnoVIlRNeMIBDWI2OpUttl2seZZHwm3jvJHxg_m3NayYOAHmzgFj6YkATsu9FTJfXWAngcYUUztHMBgpPUjF_i10QU1OaSXkmTtn0.bh0FmfC2y3VfpbXRZPuHx_b7rpOsafvj5DQz1nhz0Gk5CO5KBRC5Uvbv.zTm2BMjnAtBptaxCk2866mJYgfPS1FuD0xHBMQVKVhf6Ld8GAPJmCphQ3WjqcegB16qXJMnLohXhSltzsWlpbruQxoz8.sEs6KUgCGZertO6fTVKBoyCLHXaQNJ56eFQ77jsQvxjR.nZ1ROQgbJv0EoURFJvL3Wli30lSMR2ihTjBw1yFEjHTS0VPPd27CJY0pw4ckzfa_Na48HviOuu9cJTuXhUW91h5vBoMlxe3OajsTAm9GP8NJKgGTvo8Y8tMhN5b7tA8E3Hj9XUAs5pDidIEnieTwN1ZRd0xIa9F6ZH5kZ73gXiygabtT0Kn5BxSGB2Ss2M.H0L11mciRjn9MxQxFje8KrPysgH0JlOifbopUaabxUAEoSc23dTukhhki.xHr_rgsTwuVe_qvp5FdB.U1SO_YTjs8drXIIPGJDuJvzd.JbpIUPZspeOVxrk6PUQ7h_q_jUPPNMIsURvvRv7Xq8Sel3WOVhru1M7mJsozyKExF9dsISGI7.CX1RsAT.Xv1XzhRWvJVQ41zjZ7PVhzHtjAA_wEnriDLI51INSTmwSphPhCtDqOWE_xck43mV8PBZBfAu.unMuA6czVu29YC_PvQMpdDeH06X3F78DfQ_HCYfqNcybHhf40JP2dnZg96Qkmvtpd1DQsXMIQ6rsCyv.PWPNfA_.MEEX6omNKjw8S1AE_ZZqQb6OO70oHJGCcBPiXnXf_ek4Mu6ldZfgBsyqsDt6ad5I6H0dxX7nXA3o0L9WVnNv2kSg9SUkcwCD93VZADHqEx1O"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=90fcde481ac9879a';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\/3126098457?__cf_chl_rt_tk=r19N6ASO44ewmzpmWWp4t7XX5iksGilFj6OkaM2SXZw-1739198572-1.0.1.1-ZqobErCssHtdX98Xb7_tEZI3BVpLOb1gHHJcn4yMqa0" + 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