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-2468709135-gov.caltech-edu.pp.ua/post/950808797448

  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-2468709135-gov.caltech-edu.pp.ua",cType: 'managed',cRay: '9101064a1c2f7fe2',cH: 'qeqrdUH5_BRLigFkq9qzci.s9NV2QgmCTyQZRJ8A4Ts-1739242154-1.2.1.1-jMoFRYn9GNLXDVVgOrmrR2sj42bjorlDVvorJIc37NlMUBaASNr_kGf1cUWU5IB5',cUPMDTk: "\/post\/950808797448?__cf_chl_tk=V2.oDEQNmKSS9Jcz3MCod49BBd0aM9YDplYaWsMUyC0-1739242154-1.0.1.1-ALud7wG5xVWnWjbVbh_xvvDDjhQOUsMFZFa5hsqZhXY",cFPWv: 'g',cITimeS: '1739242154',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/950808797448?__cf_chl_f_tk=V2.oDEQNmKSS9Jcz3MCod49BBd0aM9YDplYaWsMUyC0-1739242154-1.0.1.1-ALud7wG5xVWnWjbVbh_xvvDDjhQOUsMFZFa5hsqZhXY",md: "5laxXmgNhrBZOzEzdVHda2RBnpEvpgLbA4VZGBzJJKM-1739242154-1.2.1.1-EWSxYQH3FpR5wOi4HBILK6p7vLVmKZxn9stC.B6lCerGpZ7RWSr_XoYlXGgHOHbg5ttSyAqP8ZTaergblCUymSL8fZHHqkpQrVGFfr7GDDTt1P_xI9OSJXLLgWZnFkrs.S5tDUTI1UVwuDYhZAbyEVF_EecIBESXEmEwE4amDQbQHtZ.kauJTSB0.hxMq8YuyCAzHkwLCBLaeRRQVcX5Em4DFnXnaiePjL_mAGgL4O6vyekzZpcXqAmwP4eNjwpLohJ4eZzNLvflw0jQNU3xLnVTD.zXn.NDpxhU0y7rGmpMXrg7zZknepMLpUFAx8MpBtxRRSDTIivI3B7Hsa1yvfKX7kUFy.d3H4tRfHTrUBnQEoO4gkaLLPh_ZBfQNzax8koUaDytID0caIsYRl3r4h_7OqdsSzR.E6.I1V55upyHjS4hzS.AYxsgPD2MgrVUWSHU2mUqzpCedXI13.wIiYBiyzax1KlT.5kWkDQz3AZsreAYF0j6vQP790slhtEsu_2yIDXnaWfFAdEn3d2_hi6PW1ugI0jyV1A7wbd2mxu6sqH32z_Qjp2Z3dOUevLZ2pAED.mM2s_tRHPbm3WnCcH2MoWDEB_TSB.3pFJhs7OW4pac.uFxXyI.FRxxaDrW_WAWaMmCmEM2WVZDrty2NuykCZCFCk_UBt0FHerbSjhby.VYxv_s7U6S5Q4R2tXmcdHhbCVG3I6tUId4_vRmJKa2my42tfUbdTbt8HaM8.uxS3ZCoc8vCf7UKgk8IOKw6NtWzrHaNv9VkbePNo71GhI4KCXJWqKxBIVYy6LtTMwLMkl_I2JRu1j55lwiaO3n1Z9OwG9ujJdGbPtQCikt20XxmMx.wQj2opoTeidzom8KiAr0gwisH1dnPKV2MbApWbLbyBPfZVn7emLEkVa.kEjZzOVD51dcR4mHVi2w4iLjp4R0hKbilpHwxfpmmKmx21wUsW.Wwsy.1lkyeokwn7KFV.HYHrk48z8d.ZQWI7zEkemze_A3TD5jrodxaB7c0P0OX9M8pmKLA24kdr8.36ZDlfB5dAdeZJRTMrxOFFnvCQbLANgcGXKjcCy.9rUPHqBkKBbcbG1JEmDsicmDbqc6MSlW9.3NId6MQe7wxhpjIwFFerosR8ikbP4HmM2UTeJRN78qSm9GWu3iMUW8KzGYaHkR.Msk2RX0RKe_EgBJ1PEL.VZnUDQgF9F2jbPHo6vAHs1oUitIdYpCbooxIn0EQBc9UEm.QmkSmubhwywIvl9QnM8FxNcHByapZa9XIsULW57MsM5h7Tw09vLGuzsF51485JvRvkH.TV8ZWHlXBmWE7lkuXiItkG06IesiiQbXdgOXv2hUDJ2hL_1EtW.mAFc.sD2QycKdyxPx89EwbsWx8E2wXFH1d64.ZBQt7nH4STDRQ_VKW1SdoHIIadVgcAAbrReetlyRK54WTC_68hCz3xY5ekQKatvy5byQD3djs6CvWNykKCfyp6yYLz8Deb5lJB0sKCm7FoxI0KAO7SV4WCUoLJa3n84mCvfrCykPsMesZd7K8.FwLxSH1kWs6v_Mhj8LTTF7TalGrAMyY2RnuZQvRWjme.MbaU39j9ZCkO6zystfOTr5u8Pdly_Tp1zWzi0vYp1fgChLx0NcPcI5mXupsl2w490sbqh9p5f61hHbc1cpkrTWlpjdW4h4kN5LmlznB50pMOuQqnSYbU69XXp7uZRxoaWkJ6eH_nQjwVEE4TKZFBYcJTHrYAEJealWqeG7d44umOQjFVsjV_jKyWjl1.hLr93wouuzDl7cfn30Qgs_diE0VFKn6HkkzaTu51ENQ9mpQpedlvAy.7sPfxydWoAgMWXSx_3zqQJkAh9aJH4Nu_qDc2ahIc1stI.8WIxJ1URjll1cN6QahMDmrbWqtuB9AtLlEMkuwKdzoZByFiYiDXsNUkb9cFyYU75nU4.2RKPihGfo1yRhiD023SHjIG2s1moEYec8isqthGauZm7oJ7ixtYn9TT2ZYo8uBa9WVQLRnj7wnQXQshQvCi25t3XWHSm8y2e2UVU.EZ3KY6QS7A61OnhvHK9rfR20JS3Re5XP3mJRtZ_2z34NRij2Dk8DKX6dM8dU8JVzfa4QIWjiVz35vhOGmQo8X9Z6r1bFShJjhwve1dyoGgr2tNQzrT1dA1koqg1IGKG0VoiYe1Mo.NIIrmRC8wkjVgKn5roJ4qe4oo.idTt.IINfyJET6CrvfTLEa_SgRyyha8fFJTurbDzDV6X4cg",mdrd: "t_QoaSg_OR6KXoKagmQGAqMp8bqpW39eL045bBBC83M-1739242154-1.2.1.1-FpRnsp51UmQJLjNU8XvHsGVzvXJBg7A5rF.FjS85QApOagxlAMDNm.Z2bL8spFOVE5S7KfjooqjN6tqlSEu1EofV4RB_b5q7qAgqWz2rSo6Yi2dVjc_RgHzn21rM0Vu2X2x5.vVsBRyTTbEej3PCL5iAxZHE9gIRW6wILxSQg8BHJMIHvF2vT4ItrXg.0PlaZKngjnBebv39hgAIcw.ojCL8izIxPesSkYMcZh7IrPTKDnimgEqMLuO_olSkudzwKNUBLArXb8AvjrA0kII7sum8jjjQjuIrh.6UvY7E8Y6FXNHaG6f6HG0WSCmzFTHGid7nsr28Wm28XDISLTAYf.bLGz6hIwPIFRfvS9cBSdGKbAxFfFK_UoaQBM08fWfyq8ueCIRPQ0OpxPbM00Bm3ZHSnvo.B4nHnyFlYJWj5H4cdovjIRX3KFwTJqPLxxPwiIsEZcpT4_hHcGhLFbcjTU.R.Ing1KY4HwiNmETFvbnBFnqDUxBALjko1aNjefMicc9pUyN6aAK3cqkN3ge8c7Hx2mQTtKJAkZr7h70emjfduOzzzobNmViL.w_5aCHFBtMNn7H2lu3WSPFCNe0KntKZL09f.A2dVVYM3K6h4EnwZxEGEHkocybMPCGDwUAqHa0GOfQXvgepHZqARzx8gUsGrBowofFThKHhnSKqwK08.XyfMDLoHwwsx6z53P5050gcy3x6UWhy8dW9I7JqFFYKibyIoOAkpXUCbSfrzSs9Ewj2P.pVLGJPWaEgEhPN9juVgtLQOi11NOVTyEkuRfL4GZbo9QHDGoNygVlU5cGTptolDra4dw8Ud4eNQyiwujtez69hlPIt7sTZO3YC2cDqWlTM5N82lMZKibyfcaWnt8w_mezEYR6kYDbrMTwXN0GDLVuuXWCFOEfC00JVWgEn.zSwuOC.7hz7j5ew1jNVFUBuyJIXo8LT1YBMRkgv1TrWl9ZrniQPGh9IFvaXdMAfXVXQ.iP91if74mpvSKIR73ApcQGa8PU.ym4tiqppsdXrQ9F3E53k.cN9l8T_2Bf2aeQu8V3btbN8ArCulaB_9P1NpLgMQcfM5JsftpxzT5xLbyD6x54pWW5jHyUmU78qPLhCTFNf.72C8Cl9jUP35RtBWCb7XyZcyxVyHNLpfb2Z6GTARcTNVjrLit17mr8eb.oe5G2_vmZ0TExFsq4MZIEEp_qGxWnH49q4zs0ns4ytsk52hoOs_IxnGWhdCooGTL54Wv_vfyWqIxnciZ.xuFmJk4KWG4j67qG87SBQrwBWfchy.kpHwEgvXEHSFSxPRRq9jPDcxmmLNKbZwj4_hKjz.gThDCnuPCHT7qPjkbpY2qwh54tlWR4QKeD00T03kOtHXic5ffQ7aMOJJy1ZdqAk0KbtZJVBjBsveeGQ58egk7LWEUthwUJ7zjVobicT0P8PlhajuaGH9EhklOqxnuf1ECnCSAfD3iZgs_sRIWjx75eaKkLpc8cISaD4yBHfGc6KZi1XRM0KP1i_L_nyXJ82a4Pjs6qBLktFUBpQ_zL2Pgd1jWN1o3BCS4Ko.rcTstjjdF7cr0PGSR4FojZGmwr2nRWEirZXXtO2M6HHFytJjv8QkbEBoKFRKjbxGgAKqfwMiyeJ3qO4NIswTHszhuKSSzoi08HI95Jbwnzdb_ANHcby7bhBtlRJUM0lgCjoYHrN_VlKmL092b3DrI9mJsmThO2VSQ2Lm6PUGz2JFq29QAsuV.jMGElr8vbl9788LH.r761apyzRmH9zAL9z39SmrOgfM9mbMABZNDfblktrcSlZ.Xb9UAhOYIXKAqTca_PHRBiKez9GXek8nNTm7SPwJr7J79M3kuPd2nr3q40WcB0RDK72ecGNBXFdLg"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=9101064a1c2f7fe2';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\/950808797448?__cf_chl_rt_tk=V2.oDEQNmKSS9Jcz3MCod49BBd0aM9YDplYaWsMUyC0-1739242154-1.0.1.1-ALud7wG5xVWnWjbVbh_xvvDDjhQOUsMFZFa5hsqZhXY" + 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