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-3082965174-gov.caltech-edu.pp.ua/post/3082965174

  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-3082965174-gov.caltech-edu.pp.ua",cType: 'managed',cRay: '91010e2ffdf23946',cH: 'lRLExoohR33gvXS1kNP_fhi9rrPnCoYnNkah3R0J2tM-1739242478-1.2.1.1-novtj95SEGDrcnP6XDjbyo7v8ccaRNbUwzKgazDDnk5vC_BDNqn6z.gz55ZgQfbr',cUPMDTk: "\/post\/3082965174?__cf_chl_tk=izCiUq02l2z4hFEafoEUQ6_eZfYQCcZFzpz7k4V14zs-1739242478-1.0.1.1-p8k5IHZz7.QmwUdU1rfBc7_dQVv4q7_Z_4TQkimQ7uw",cFPWv: 'g',cITimeS: '1739242478',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/3082965174?__cf_chl_f_tk=izCiUq02l2z4hFEafoEUQ6_eZfYQCcZFzpz7k4V14zs-1739242478-1.0.1.1-p8k5IHZz7.QmwUdU1rfBc7_dQVv4q7_Z_4TQkimQ7uw",md: "MBpAfTohas1evEF_akYfYUc4EJ.7kbRhDsHjvHNnjeM-1739242478-1.2.1.1-oEHSBYR7I5iX9hGkZ7KhO4GN1l0qm6cIONCQspllKlQ9Gqs9QTIfvfGiHd8PBr65NZikUZbh7QQDDIDx3STKUBP6SoNSFPo8cOkT30GF8SioIj26ey8Q5W.kX4hrE3OZsaNn.vJpfYG9i2dxAMnIMUDoQIcCG.bZzZ.uGoAaLuGxzeHJrWzcqjjhTeaFjpyN5VWOYjURzLz9r6csT02gx3K65Dpab_NwHLgXbgS5dToX21aCZxGB3jt1x72BdFn7ddU1jYNTiaZtlN6DiXVq_dwjlZjq2D6dAh8McVl2lI5_9.CXgiZZ7GoR3XyHLUtkDsiFhRy26Do_aPPpsKwkC3YtsleFnW900W5QQ0Dt4Q3R9TtfdOCB8iy7UFisOS53vfMxRX9drPXnj6B7F8tr6E2JnmR1QiZDDHVcy3AQXZXLAhhA5QNg1gxlu6kFaWa5rlZm3pEIjNkH0EQxGij4YlQKeCKtNqOHdD55rJsOiiC9_NJTKO4uPVGlc7rEQQb.vHkZlzwYgH9hpMsosgJyScOmDHLEfyX7MHLCEi26yNPUjnTiAPRiPM2G.KnxwpiwRlPoSqJRoWz5Oo2G0x50T5ZRAiUdH1nHL7AOly3ijtI4ypF9FoauMRY76woUveS..1vyvlsqi9cq7ExHbh1O0UJyOWUzRhUIZO3qKCH.ABi.32fXCzGeH5L1dT8R3L7wH2.J29.YhgpToXVZ7nTibFyrDs412yeBz9xMIIx2SqW7u.TONPlsXRqPPx51dgzUTOppf1zGnFV4Id5_z6dDz_Ikntyysb765zmMr7WSaXT1ZjFTgr4hyeXJvv8.gRNL1X_bt4.M3aeR.EV_mDAwXDUz8t6LGGluRRoAmOvafqpTfvhQfJORfon1_pqQ5wylOCt4P.iAlXIJxyDUEj3fGaHPQo1CEqu6N3DVMgOIcYNSEdu2w7nNOFbB_OJfGHLt1bgiHkcYGeVMSBy3zXBkIc.k3yCslxoE4AnQbJQ.mAbbPo4n9vGeNj0yQhmXiTkGO0jSYOacrzK5KcRKfJodoPKekGo8vsm9cleBiMIUlwqrZ7ZDMhtWWmyqSb7M2FG7Ug4Wtb1TRKbqeECXF3BFwCuQ13gbXWCVw9yDSYezDHYvA4h5kUhXWslf_ZQwdfhewAFDSNxXY58YgdIpZVas_g0UfFRyVhmA6rAKTGOi2O0Tq.Yk.nQa0OXIvALMlv3gh5w7lQDnlB9Hf9xE1NiBep2nK1ZD7dm2ICky2Np840IE3rC1kxv29xkiO7TiNw4ZtKfawBaG6FeJcL8nvjQ0KdnSRj9yo0u_jsTh9mjMP7On_iiZGGC9LUklcFJFj.94lvlsjiQLcaytaTnflb9IORXdN0NhIuChZPeb1ukNo7F9JI_Iq7no0UfETvbua4UnR9Byd0ID.9sTrxeg3gQWPTXU8pn2Ue_GLvBgx6BVJseRgwPnzpIqWehdW1vxh0EXZ6_xd1UculFltfiLDuy.1mrkwenNCzLGyMC0RPTue9uoPWwtjKjIkPy6DzMFPSlxsI.ifFA_LXbwNXsFiHvLPPxpviH7M.7A5qf.vF8ghSoMObg5G0NATS.8_n6_XNSwsXVdonTpfM5QThVY1PY_FNgAa.fshC.FZ0mjy6aFP59_IQRFrIzSCE4v7PYVqwccCswf2Hrbqh7sBlISpVU_zgDJZSKOoAgpkmrIuZOEZUpxnmSx5Xn.okhYrdXRGBXcs5wEDV5P3p9zyiYb48Kk.gMlxATmyCuQVW9eBCMHDMxQX0dqB83Et3zRhQqxVGlmdTefhwgGbCuvgOSr5EUM9PdX03IEOz7oeJn08HEFNOIskMXg3has8lDkBiqSAE3WBfKwlynSekyQy1tT.t5eaLQgzds3bQIyGVVdN0DjT3Ae.AM1w7l4rurxTBJB4zuulo69UNuKJAmfVoM6wUdK1lsEtR.EhhlvYUESsCLGaoxRHy.YWKcc_IQyS8K1vdIHMLlcIpe9U0fhMYUq8vaNVONZJpe1P_FzkSkP2AiKNj.o5mIqK4Ge8yiJ5Epd2Z6DjPHscz5bc9TRUPerqOaEzu1RgV1wTyfRLN9doIlxO5jKqiloPVdgwszgK.yH6vS9vdYkaUhFmftu39mUvWW4MYOLHw_RrWEnxfsKCeUU7qbXF18xebJdtTwsf2LoZ6ZicFZoFvuZhVb.I_gkhGSAkfWcPpi3_GX5Vqzh3yABX_b7JL4NTjz2o7EkSjHyBrMyUjaYGAxtFqOsYBlK.BSZow",mdrd: "bsxyZ225W.Ju7sTZV0oqD_e4BIQGvuTCbiA0zpy5Nww-1739242478-1.2.1.1-clYvA72g.w8dthYz_PWIxkwHQrJdRf.Gqd2_EvP0.K6J5dqGRXfmiMuhJVBJ_r52SEWjR1sfGdX8NgiHdpLSaLx5W.Re5ECp4MuyJu5fstCxaU7bQHOtrKJFwjK.PlD90pTfF0sxMDDcy1wvEZHRUjaqCcJSRz735tO1LXfWoVRPD9_w686fJC0UZuyTj4ljI97NvM_oQYfS1acBhCbFEHbGk9ET91qRyeVsdT7XTwobvB1ipjUc6aWbepvflxN_tT9ynDBm03DAppB8OQKp9ApeCh7XknK5tmbXUwB_jx01kWymts1PJKDblXzY5.I7ps9QPidnvf5iGTEbJXoX17RUxGZJxDPbD_jgVD3LZndXcEKQXqa25z1yGpoEDvpMZjba7og6E5UjX7Efo2Uw8Jv7FNugFSZiQzwaq5.6sjQqvrtVXtv77pPhj6tuDpk6PbaO.W_ZyU7sy7bwLBaAyC1uXIbUWavAT7mlRalqp9CgFUzZ2fVmlNs96V22w9xJ9LWMDvHPBKXQGEUx7oxO.qnQ.yPrMuKWhGr1MOH_tiOZULaPUgvobQpbQpOzAaCNa7CysVS1hEAp2kpVDZabGtV.l.JRsl7en6D16j_xxxlovGX5jJRNcx5xjetAdl0HD7m6jthDWzePtvi6CwJMUY8CLWnkhRzOp3CirfKFInvYgzkUtVirn3QrJ2kL1Txb3wOU46dFvvEMD4dzpFBzVoeY0f8HZL0H7quAhySQrI8_3.GGVHGH6tg1EOfuIA5VNtf7r07wshkiunv8Qbsz.7b0RMwKv338Gk1CDZM5zcNKQlBP3WLEg1kRsP8ZJjo9.JGKL56jC9UlTASAQuDmiVuqZxiv3Ohi3egWST13vC3Ca5sQkQlVp1fqidrKS9e_xALLi4l5qgrXG6ykRg9N3215lj068qvLc4z3SFdKsnpRWBlZXWEML7EtLdie0a1YDBPWaCnqh0HePggKJ64BsoeB9iE1MTObKpJ1eowkVfwpUZgjlhzgeSwGNug_lPAPn6jlmp.3hLG1d2kGocPYuyknY2a3ydx.0_8k5f5Sek.RPV9PoP2TIe4EvK6uvDxciN8cejRec8A2Tl2YLX0DvCeUQTb7G_Z_xy_eylf9zthgV6XoBsCUpcMhUbCdbBhWRzChchfUFggkBTtQ9XrZZdmCo.xeQmFeCr3BkIQpdwyWORg1XgPGJQFxiTcBPqoal1NQ4lEMtcFlPwWpcLkeBHj3d47k0dxbTzl4pUBWWOs6Kql1xwO_vjMp7welaQ3lqgjSdkI6LfPV61jHizQRDp8qBCuUL8CeO2azhmI2Bbwdnix_8VYsYtrcRyewY3j6Kr597.owc0fR81FkcTk1qgUvtK8By4DsJ_3LDPaHjW3Yye2fV2Nz2yPJLTchNiVBtwdEhJXRivqmKThsYNUQPx6dp8n5RxB3Lodg6318r7vyd01JN5nHBRBdqgjc4XQJ1Dolq6pCzjDx0zB6Wsz_Z.JUY.jqqCgh4Am4PI7mV6Wf3gTX9RuH9zU9a9xXlsn_oceeJkShLOm5wYhyL..NpRCtydh4wmO2Yu4qkCKKPHiNEXTgh9JIwXhOazSqGPaYA5vKPNmTeBcvHtRCYfZy89zAX5TqOYWAkoSLpfLpnt6sqGZ1SeGau.7A141Cjdzu8uVbTC6dQRGqFF.2675CcyomEHP5vWYxfR4k0hLFKV4llUoYc440EMg8Ft4x_UGtajpGo16JPyt0dzz4r.9EBK4.tP.p0GUKM0OkYMc0fdx375623WX4fH_D2lLv9QhhOKeG2R7nLpv_U5LCesk0peXIVrJAjUEGqkJFyV94y5lR6nRNMu5IyGqqo11F0VhXoc4ZgopDWfunrfxU6H6QNw"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=91010e2ffdf23946';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\/3082965174?__cf_chl_rt_tk=izCiUq02l2z4hFEafoEUQ6_eZfYQCcZFzpz7k4V14zs-1739242478-1.0.1.1-p8k5IHZz7.QmwUdU1rfBc7_dQVv4q7_Z_4TQkimQ7uw" + 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