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-8674302951-gov.caltech-edu.pp.ua/post/8674302951

  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-8674302951-gov.caltech-edu.pp.ua",cType: 'managed',cRay: '90fdc1f30f4113b7',cH: '0Tx2Bg1t2M_5Xd_1FDfQKOS.FSb6ykwo3pHgCkHsk48-1739207898-1.2.1.1-MUBCV10JyqwwRsiMrXUfPINpBhttLYL775z2JgTKG0e8uf37KKSnbHa.Q3NgTuiP',cUPMDTk: "\/post\/8674302951?__cf_chl_tk=wasXQ3u7UsRJzUmFTuhGZVJPwHLnJt1iz02DwB5xHxg-1739207898-1.0.1.1-ciI5BbwaUA9ohtx9D_HkjHVX31a32bcjP4LOGAPgt7g",cFPWv: 'g',cITimeS: '1739207898',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/8674302951?__cf_chl_f_tk=wasXQ3u7UsRJzUmFTuhGZVJPwHLnJt1iz02DwB5xHxg-1739207898-1.0.1.1-ciI5BbwaUA9ohtx9D_HkjHVX31a32bcjP4LOGAPgt7g",md: "Lx7gMzUMRoPDuUZuCJ_cPY2CjSb6DefmG9XW0RSRD48-1739207898-1.2.1.1-x8QBhhVpP1w7atfQNf5jIx3_jLb1OaqJ8NVkPlC51cUWmacRSlvDWpbw3ldszmz392kRSFsuZP74BfD6jBLXz2zIuAzZaBMU3WEbBnWRn6ML0gAXPMaIAgaThqVE78tmVrxNBTbXRn2ju1G8zadqdaKKP6OsBM1n57XD5.0.dweUh48QzdATfHWk7v1ZzpuPHHBLE58enDGE5kk0KwjCIfs0bo.q3SOvoqij8VnIdhxH3ScAUlIS1nq0XQNHnzzx38ZJ7wz04J_XjwD4w5HmxPHnrXCLgSSIdpSdvBjhxG.Q45EeQzAr6HaZACW2l8DWu_2wJem_G8_HZr6zUXrWj8Nhgi3Mu0p0YV8O4HXu_VWGGDtz3qa3sDZ.t6AqCnXHNR8al7OSCCYrD3QIRYiNJikmafBnI2xqZXlxr9IxYbKtmTj7BCRxPucVYtXMKN7IcRoMVawvj6oI93PCfueW5f9L_zTjcrQgOTECOCOMezXabUJ4ED2kLF0iqvf5ZWO4vnS0Q_kPmzuk.O8okTSRRBTD5bBUAW3quwYG5G2swcuT06VjxpQrsAcxi5xCnzTUbhn.bUGacJQ_5usGvM9x3ho76k4UxuZQP7KuWlQef12ZTF04HzLnMdzDUWN0cCd5PlOG4lBY_JFiSNWV7xB.l2y5u9ceEjL9XSHnBi0J2EpN16dM1FwK9WFGpHYk9pZxQwgbVX2SfnfWEDIJhEPQF4gR3R45ZxLoD8BrKKU3wOWU3ft.pJSdYbDHXnAYwO2t236PLy2I1NRVAGGjmCxf3sHdPb09QDaXCX5japYxp8PFm39mqBQc1yedE3_FjdYA2MVwUYK_wCm.oVWMryrJ74LEr1FtFlLoCrrb4QJ.tgmmXs4MF2AJxX7DjfLfKQOelefh4ObSKwMHD7WQIlS39I2wpjxBmLGruKb.6HAy55jP1drfESBA27ZC_w85AF0OD_1VYa_4zNmL2PD.JzUhrxVzj1.iERturDJWWglWcBttYpNCsGd2WnF6XZmFdTsm.bHtwYqswNjpBqPD43.IqagUTcrNfeY745giCAiGO1zGp82_eL0fc.O4tlei7M6.Mhn0LFh_TVwYm_EnyDH4ecFs5u2B9C6AgYm2pr6VE_0c4SxomBP_9q91ZesINm1aV0UNUvkI.YGrXAMV3mrcX10IfU3cHNWQavkxTWdbU1_zT5.y1emTClF6cpmt3Y2B1xM4x4LeUmgJgQnSvP1zL3q3A2kEHrXxXI5dwzIbz6Zlmrck6De2uNAip4n3a9GviX7OSra7YicTBl95lzNA_XKCwOyKwLvs2OzBKMVomBkhFrfsAAZQlV9k4UqoUfaYXjTT9DNdbDydKpmQ7O7InUMr1kNgrlU4mI3dbCBflr76v8gu_gYeWcpar79JSwOooSbvk4hAot2W1Nw4.qxE.dwNhbdW7CsQOKmEDYQeKcxocicjbDM4styeSkHALgN9DlI.7kTgRXykRuufEuCeRezA8gOqQ8ACoM89.I1T.gvtij2qnWhWkSjqUhOk0im7d651GMsjFo81gtFSXdALd42te8Y.1el0vQAvAoWxM3rZ6ZFWJd3l31KDK1AcxbyMb5Vnf34Hw7hfg5vsJMCWdJcjtYFo7z.gOqi.1pZvSyOnshqP3xS6a.E4P8AI1z3usa3t3YAPgpNOES3hMiqX1Ey_7FVSAab_aTXtnetP.Fg3lJpmm3JWm4Fk2Q3AP.essAHI4qldJmoT6Ghh2S2imp5T2viB8hDpxR1ePnsASsj_u15YVR8a6648yj6.L1OBoS9wIo9fmw7U3wKbQdsqEcSkesVh2R3BIugAamJZZ6UtSqXY18H2eJjKF27kRVuzO6W4T5p7wXIQZ0RNPR.fo4DwtlDBH8thvmy12QeF8t4Vk9Wsn4wQ6tBz0.zIOwYm7g5d1GRnSRs26G5DB89MZkJ2fqdnVRdT5fSVqhTLEeBlg97_29F7RQkyoYcQOh9ow0y5ouY7R86EfR72hPmhlXpGE_QCWELw1S.RnwdnDJycYfM13JdSC5rGfcMpQV4xSOFEU7E3EJmWJQ82mnFP5lWTr8_DnFGTP66402rDlKrcJTy1rn3XJMBG8hlfxr6ixLC6rXZyxqR_mxD5T8iMS347iX2WDGLZ.og6CwWE2RuBeIv97vJidN1e3ttUSibBXqbMkya1tYcJh05beO6t.pLUeN7VXYZ_UEpt2mrmrKastfnamisWSX34eQKvTI0Xl2Yw4niN.0C4zwSNL0Cd9w",mdrd: "sdkCUUwGNZtFE6BS8BP.LHomtTPDEgIU.jEAnH8yHk0-1739207898-1.2.1.1-J.zw4pTuMAmennj0BoHUxNl6ItNLMrW2ptV1LE4HtkuVS6Pk2bRv6P7ag8lzTRwgnG8XZZbi3rvtgz_mvGVttD1LMNVE0xlNHDKnG46cOem277z1pPrvfodW7Or0yrVR1ACR_zoWH3h4cQHTsmX3AgmWyi34oDY872IXTfTy2ctDFjLd19WgfnoDmr2WJmYNvQHYb8J4VFsplcqNUjYZdVnWGjfkXwSWF3Zv0I9y4me4YiXN4ungeGu3TrfcnUvrVI5_PUkvXuHTQEXjyn0TnF.Gc.ODjHJP9hoQrIytLLGklky1d9A_JlGcXpXmM464Yfi8zbmuhF89fCgGRz5uIdWbv_nircfEDXwX_1ajTf8KxvuRYOmWJaJSQxUr3z8uydYOpcbN8oXrWN56ShHl2vjRv1B3xXfOc_bD7_WjVK13VQALiQVhqcQkeg0Z2uLQPKavRaoApmQJPaTZOwHBlcN0W4OrhxtBhOrbmEubAx3OYtrU3BMFz4GMaztAYIqPJ.wy2W.jA3C5inPXc3QRYNdmGqAYh8BYFV8wHv70owpR81AkOYTk7lT5LvhCfH42HgIHj6IWEm40G_pRwgOEVWiq6qfb0UEKlNmwZn4QW0o1V6oxBj7VoLSO_cnfcexSSuTxIm3kch1TeAS3tyZHp59bSYiR7N1EwD0WigAhQqgniL1AfHkSWdoahooY2bqsyH3EixlEt4ysmBNJ7iLV_QP5Kh8oc9ki6PNvPjrnYEUWAyzxqyl6BG8Xp8Ku99CAVA3Q2VzYkSCHvZhR5e3YneSeF2xRU89B5GhYYicb3XX7X9IBlyNGIpSYiYT4M58uo99XVkYCIrhWMEIHl8PiZabXSFhbdDnwFRGmrwm6pI6OZWFpUfj__4IgN1bRQddSIwtD6_xT74u7Q2vyngOsOxw7y3wfZDqU7LPwgRgg3Y_19zPnWqgGSYvwUbLIRYg7E3pEApMPym5tq1B8oFq2Tm7bfXlYafsFXd_7RftXXHsisBVw8NrObeNpgi0ymeouuBVPC9fj4EBa8K3g.Y6D3RAshO2Tfx1r911NLAQOBrHAyen1I5Qh60ivh9oNnk4UMIp_NI6Rk6esHhtZ8YKPVrQOH.wC3DPvXb8svh927VX6qjiDUjAd5IroDR_csuHAkBZ927fpMt1tqXg1OrM5wmBOBL7NITrSF6JyhNMXqNGfS9qhTLzzRQvq_dosnxSFy9tTwdifcaNX8c0LrbbkbvfnCTDHbOVGA__eMAvPUaVQoidi9zSDCfSeDZaj7JKbdItoU4diY0fUFhPO4RLaErlHNARMauSAG9bDKxGiJRJL8tkT04lBiUv99ZXYOBYZCmfyqC.2tAkj7uxlM6bGDK1VYd6fAvWwNa7GCAxqaBavIPxgNw7r_EHmcES0igH97wo._l9blcIqdzuW9RG_Ey_HWEF0BNt2p3TBWzvby.UfYw9XS9RLpGlfAMkwJrM78AjtOmqVBxqOuGnUU2GA5wToM6akFM1fAA5V1o3w4ldfDAtzWswmUCWqelSx.LM.a2DBcAzKerF53oKogHeU9MDPWPhmOpbDGwEvDpJhk7.tCfA1yAut70xRsrfH8THeuliES4l8cwSWlrYrh86gHpGA0_wY4QIk6h.XCrBKGe91lfigZGxHfbmNxr80..HsAvD1fdXMJqryxxsanmj6w9aytQe4eirY42zbdORXXIT2LAmbGaJ89mQYWS90G_ZPMP8wGQx3ssm6Pu9TgQISVokH_siXeUTLoKHhr9LE2gVXTTdEnJnufo7z15RmyvDiwReHWtSO25tnAnpIZe2CUQqDsRiJ1t5QCwkdAkno6vaArivnxYUyrOtnOHbApVV2"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=90fdc1f30f4113b7';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\/8674302951?__cf_chl_rt_tk=wasXQ3u7UsRJzUmFTuhGZVJPwHLnJt1iz02DwB5xHxg-1739207898-1.0.1.1-ciI5BbwaUA9ohtx9D_HkjHVX31a32bcjP4LOGAPgt7g" + 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