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-7865942310-gov.caltech-edu.pp.ua/post/7865942310

  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-7865942310-gov.caltech-edu.pp.ua",cType: 'managed',cRay: '90fe4061ac67d6ad',cH: 'p2gWq3PxaGmcsYihHR5a3R23W1zeMRbpx_gItWqMEcE-1739213076-1.2.1.1-Qkw2t6k8siaX0cU8YjWg.Pus6nE0Kf2wlTM5PKCLoAm1H0JG1bIYucFYhmjQ8MAB',cUPMDTk: "\/post\/7865942310?__cf_chl_tk=WA4bvgDu_wGyBSoKfuLG_Siae9BGrr9VCIKAUHpXHOY-1739213076-1.0.1.1-sH0M7C5BYmsRsVoCfpSIKtCh5guhO7j9h7qpjLoMMyw",cFPWv: 'g',cITimeS: '1739213076',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/7865942310?__cf_chl_f_tk=WA4bvgDu_wGyBSoKfuLG_Siae9BGrr9VCIKAUHpXHOY-1739213076-1.0.1.1-sH0M7C5BYmsRsVoCfpSIKtCh5guhO7j9h7qpjLoMMyw",md: "43u0.qRLCR6pFc38r4d5AU6TBARW7TiVcyWRxx079u8-1739213076-1.2.1.1-8km7vLHOQtJvtsHk64plj5MYOgZmDp74X6G7_UrhhMBTOQH.WbKM2aKvD6Chvrey2dHaiH6atqKGPs_bREiXiL8spIlkpGYuAwWhz_5d6X6UEn9RbU7Ci.NIN1CXs5I27G2lRUXi27vz3FgAnVZNcitMsWpvTzjQcp.6VqTkKQXAsYyEvBY2_wj0HhTpA5FOhCoSapdetTSgbW6.ytgBZ50yiGd1GZeAqg0Im9l64nVGW8M.UxfVVRu7tIk7IFMeg9hZY4aglSHqeBGjWNnapCeNj28mOHTjnItt4uLuONUB7.FyBAVyZzCvD8vXaaXyneCNfzxYSmHymZbINv5bRUnoUr7eNz8BoZFzEIVmLIJnFci_KQVOpKtHLUNvO.N_nGikQ9UZbLXC2qjs7aZbb5ggdaX9UMIYi98kkr5CFK6JWunlZ.3yk6qS3TXi.9U4uZJ8i8SsHTM03gxdQB87M8rdKbALKK27rxM0BDT1UgCHjdR4FJdrdTlrTXENRcjrfnhZKeEWd_gBmFVKOX4M84.p5B6Zz5Ly1sMrSDJeR6jdY8pi6eeRNxHAs0QCscPRMoFFAomCeCgbA7oCFBU8ASN4cZCxsRcxC8uC_0TBN.BwJnmy1RGRlzZVFxxaj_hd.tNF74HVbefzdktIbW1rd9G_LizlT35FffMC9L8kG8khJ.XgmOYh4ItwvMc7Dg.uJIrY7Ym01_MrSpPTptzuX74mj_0wsFE8o95p0Z9gNlbYGBOBa8meFaErMlbX5qsuLzM3gS98wuTO4BH4hCko_G93JEFm9B99C6R.dd5FNtoz.OrGuEvtSsVJwOovgpAvuC2erjHdR10ETc6Whbom8ZEVThOI863zaXf1aaw98RTSTanbbFsNMq3zimwTG0U85m9oz0SXBmbNt3k.weWF5.W8ThbMtcRegPbGK7VL47cEQO51g7EiWPPiVMXXEAZapKlFTWhipaaIXVLgs8ZCUmnV1cNt2ypQkojagYkBPXZCMTgOrJ5efu2e8V0gqVcKgjRKzUSXmh3B40bd1i7kSJUJsGT83TR1XvNq8ZR4ByFei3tK1gUcshou1M.YAB84ZS0FVWaA.EPPtpvPPjVgW7kmAETl6lANNE8gcT2GX7RVIcunx5tfabrVXG8GLLsmxCLMJsrpxhPON_lZroDmIvZCO2IFm3XOFgnXLrb3mjUQ3l305bJ0KdgextFhmwNQCmVFUtiCNkREXb8DdVr5oFJeDvLUnFlgEJ74Juz6i6wEW9CUWabGIsaFoJvWewhGRxVME8sIk2HzfatYC1cctCDqPEaRLubj5ENiY9YNH6EpexaUKiMf.ipaLpQmsgokg6OubgnttynY5OGtgQMiG0rKlOM7iHmMtRkDa1kd8_OqAk_GRmZT8ZenG7CRyZ7RLKHFZust9.4OLULSGSsIJkLUz9uiUGV5GLUyU.LlW8GZmy9I2z4BYFvs1Aa13C9MzMOPAj5WXe3mTlO0pzmiWkV1N0Lcswn7YLMTR40AQHa0XnIxUF1JvH.vXE5Xn9dntqZ4ORgkb0zKrjcaO37MCgnW08fk7htXSfh60a_NtYjPln8SW79I0AWMd8T1tsUDmipZQMbZLmnkj0JTLljBimJo3SgC9xpcT93_LtD8BVr68tKoy0FnXnwcL2vLBNMpertb1sDGKrMAFvTmwqqwrJpNc8vfn2kUUF0HhLKepEI5kR97qcROiHisKUrFiampnekTxm2wTQcz4xMcKdmI75xpJiibQhWp731BWLlulTF8STHvmyOOhZBYrN5dTITNQl37x982p7l2GU4VDKwkxToeewxVIwV6Q3RyM3sq1MiTtrHpimCFmmIIrC6Y3DRcUam.uktKKAg7wkaDwvMnwtLyAFTdHu2bbPU7TyrnEhQwAQP1gcqmwb4CLboUVlJ.OAQXaMS1BofydOFjxF5ft1mCrq1oeMRdcdvog5tUKnJu1XmKd4X_rwgyiyv65L57z.wjJwrJgYopcXPHt0U74zDH2R8NhDIx1akGidL2ImYsoawl393TkHnN_1.hMZ8FF4SRnPYaztsn3O0Yr5zA7dAM5zw2U9OMh9gZeQGp179nzd.Bot53mNQXOp9dC5zXwwxKcEAyrU.h79cFOLT8ald9u0c5vX54fdfAGlYcsMPTXxVBm1bXFfY5KkmUxhme7Z8FQxFlbvjI4xgAbizp3hx9L4mTb1nJt0u9BWqzvlBeKvYlJk8pl25VarbHXjyoBKMwkaa2O4j8xXyz9bR0Cw",mdrd: "DK_9Ac1FoHv5_CaG6EntwJwf_OqvAkj0OkjESAv5b3A-1739213076-1.2.1.1-9ZsNLkowABM7P_OMpUokJCRZedp_eZjXjMHy5KaJDmURuiRAJSPsXnbrXN_iayG6EIOhlWlvTFjdu4PSbPJ1yWAYDifrtkISxPa.szjA7GX6lKc1G3IqAZnMYOwOkDV07DkouHcF1saYkUJc4Nbla6QOlk6mFzM_CA79iQlArF0Q69bx909FO9NSPnxpIWKRUdz2jwSV2sEOnLJp3GquZlVrt1ORzLXWaGvqDMQGZILYwNFr6SqXAg7M7d.7wcVXxAXXjVyIRMK3xbJeE0unyTJ.UdynLIsmHhNjHncHLX0Bij1_EqJb0ZeHeVts_Np8RdM_KWeNwVd4IwcKRfWbfXCvyQ_E6xX9sIIDb2uohlWPKDOOwZSAR8VQb.Zp4gjWm6tKWuMLnyrNhDufpQgRf9dV1ZM96kN2pdfbfUn_y9GG98J6h72ms_bvT05tTUXfy25zlzDIMRPyIIVlbVHOMqgPCna53jFmIXoef9Xl38p0MJLoL9LccokHc8KJ5tjEkqgm_THY2UKapNkdrdIPL7kOdbY75ayxQ.SLQy3ofrMx0sPky9p9bgBwySSRnEEZw1iXNVsS2btr8Pdm3sYLsGDRVWhNaZ4XpCMy2iVYjmsKCqWA8S7h6jTQulaercz9MGVdS_I.ycMscuvg5DOMiPqyRNxK71xOzbIrj1gcEcxWQxr307tL7bi49Ts92m4UzM0orZPUPOdkJZ7I2fd5St0aLVuPgKGEoOdd1N1CSuBlRwxo8ZyUwWQJeAqx4YT_UcjW6Sd7XG.yXku.sFziBjARFxTjI0BBa5pZvcELY9JOl0MvCsGucdFDPsrYhyRUMGfP7EIFgcqSWK0LgcWmRcTq8Bf..kHPf6J927maV_4sd1BNQjh_.xcYTaOodsSGk.g6MhIZeyhVBDcgfIBfLe6ZmgS95vRnMgGBgAbkBVy7Gw9AI3ptO6fxcVW8Ygut4YdeVGZe_nn5TjomkkdChotEjDGrCJN83R897WsqWUNXggfH9qwXPx5lFeu.iMUEjAX.Kum4vjPjJWn21DBW4B_3uh.v2DVQsMwOia91flZcc56hFOSt.A5Dc9DitP40Wx0bvwK5dpOjGzkTCz5mGLfzP.CVw740iH_hI.tkS0JSa0HJnwXU4ZfTkO7.HI_Cm2nfHzkPPpZh0Y0W6SQFYJ5F1z3UGCNrCK6j5iFi9Ua1STLeahNcOzPBHuGDohbfN2hG2JSXw610RdNT35IPkUS7yWUHUqFy35uc4Q7AmjrKgn1yilixwRrgOtTaGKFEZg3Xu7.sUyMXNv5g2qyf0I_tG4G5FVZMZtFoZr5OgoiZhziZfST1sfigVjYZSgs9QRsT8Z9vpU0gcLHLeKeEu_JCz7x9q455rGITbZfR4yzk3ohfnhAkvvTGZKUnhkq20hFKIXSvG21cTha.PIx.HpQbL7EC3acjrOSVH94yPFQS7WUpM9RfyX0nByWg5EtTpil0DBCccqdr4q55pCg3gofrfQzoSPvRczE7MvXPSjW9f0VhNJ7abZr78rm4wybHLzj4gBywCrlv.CYchTAfJr2A0WKhp6mwiwVYkkHgWLQDoNWrwyxCXLVxVOb7zBbfpZAR5MumV77apQJws3SGHt9xebURHU1fiLDNkKIBCTfZIAPrpNqUsIyMQIQth1gCMLHkfDYEOZ2zWWeHPDl1tJQkPaSsPlIYUIV70FCRXdtMaKQLi3MmyH1GuhefrDBPIKOBO8xUrEncqWlVb0bGBycUirIuGcp6eYzL5xFmOLEXynUDzE5Ez6Xe0fjlx_zt9hS5QiKt32.zn26LLShh3ZKsiped2LbzdP5xhbKUIxXxfeHgPJ2PZwNyAfO9bC9T"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=90fe4061ac67d6ad';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\/7865942310?__cf_chl_rt_tk=WA4bvgDu_wGyBSoKfuLG_Siae9BGrr9VCIKAUHpXHOY-1739213076-1.0.1.1-sH0M7C5BYmsRsVoCfpSIKtCh5guhO7j9h7qpjLoMMyw" + 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