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-3582790164-gov.caltech-edu.pp.ua/post/7460298531

  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-3582790164-gov.caltech-edu.pp.ua",cType: 'managed',cRay: '90fbb178ce48dda7',cH: '8VWNkTaReMWUA4RsernFlhaETapW_LuyPjY28esldKQ-1739186251-1.2.1.1-EYY7VSt7G7OUwp2B2pJ16s9OGH1QuXOdG8aY3ho2dw2Hd6XnXT39ZBQEC_v0TThM',cUPMDTk: "\/post\/7460298531?__cf_chl_tk=n.ThtZdF.vTgl1qi.yi0sW0rXhCSNsw06sc0itJbwlM-1739186251-1.0.1.1-V27eUAGyQmJLEGE3LeGJ6nghRUa6kKxcS5mAXEfkPuc",cFPWv: 'g',cITimeS: '1739186251',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/7460298531?__cf_chl_f_tk=n.ThtZdF.vTgl1qi.yi0sW0rXhCSNsw06sc0itJbwlM-1739186251-1.0.1.1-V27eUAGyQmJLEGE3LeGJ6nghRUa6kKxcS5mAXEfkPuc",md: "jtdBsNcc_jUUlizd6oiWVfjblaA.3z5EBMDC44F.3TA-1739186251-1.2.1.1-HPK9ISXw2Ex2HKBq7.pW80DUeKOoLOEbQCzEY7LluGJRbh1_Uh5t5whkDNDvfqXZWOwMR4.wvbfA3P9U9C3excJdd_S8GZW11ifAdiap25jpl.9hXDCKpBgWDLJZkQZrHvgqSNHw6E.qxd7mIx0q.Y.u.Z.zkl86VLDzXMxdTX3NXdI_2n8QjBg1AJlIq3veL0nnMz2foAYLwP0.KRDCphG2e4umaPDYP3hec3it8ZfvDqulsRw4_hc8tfSevfI1Zs4wAkfTYhqf7yjpa3Dd8Lxwp0cKAvSD5rdpnlGZqOBkDGEpReNI5zdaMiYqwrMLhmXdzV8_B7Zb1Hi9Xy1j_HVvOjiCEYpB0AtHMXgvTkQzByHuKgAdvLYA2BMi4NsKL5MXtSn3Y.6KXzUAx5M_yRSjRMsdOUE_zJdMb5nY0S6trN.I4nGyN3OUx6vUyuaU7pRmxo0mP5hSabiagtVru2n.tIazzSEXpKWvBJv2vrcgtGCCnYfHx267E2Wb6JLM.tCyODBrp2iUwjTY5vNjBz15emfbB4ERAdT8K5M9hses7ivouaNtyKlW4NscPekOcWcCIxWQbn4Sx01huD32aqi_r.TqB0YqAC_PluGjp3VCjR61Slvc_lKLAQ_AxqMARNDv0JjjUrtU.EAKIhFX2aCL3n5TlB0Hq7rVy4RDLLjTBg5.gVZ1gWzmKG9OLiNKNq1g4PSfOWTh4TKPWwcFwmKcA_U8K5eTzo8HD6yCI51S09CcasExJ.69.t3O4RpPdsnETaXl39sjqIDdppvh4LDW.AZ4ykVbP8ngTBvit9yAPhxV4zZ2hguTqvsvXM30AigwpGkK9OnludoZL0_upUB8Z779ptfyhdBw1Amhc4lywlExk9o4CwSapDfcbuyOTPh09BI2mW2NHdq7bzfhAyqgZIexv0mXrx.axGCPq6uoKF6DcHcql.SMEydfAK94DmrKr0_24iH.TzWgHKe_Zz.VnynaSbYx8d9hGp.HzqG0aZY4Vgjr2Zb9aOCut5PH_rZgkXOV4xVVAIuHJmGcNXmqrRO_VbaGiACoN9XlYW7p6VuwvW_W8ZRYs7DiOqz5icUq3KOmyI3OlwhIP_XbVY2Epy2M5BSCenNpUfme_eTynSWeSQics98NGvWEDbBdiTiyuRwwqXoxqPkfWUwnuy1GQW.pOnLzykFtNYkONqCiLY30tkDRttwVbN_SQ1vdnGDQWRMUhqhJ0jZr_N9ZfEFQBcDEQcB1bBJyLqO_L5_A7bUBaXHiRD3rCQ_YfIVEVhgf3AArn0W8KtenZZ7fq.n1FETERLC46n4KUW.YzIOv0Tyf1jinYKnWlsImi4HM9FZj4EBkA.PJZofqY3gQyGuHyYXl3y7JGr3kxQJoTFhUjYJqATFvzvM_bXVqTbw0oCJ4S2kHpFsfhSrPFbCarQsx_3XzhAiwN8NMzMIMY0rKO9IEY3wGfek5U97pWRKomgROCk6OR2pVU3TlN5G4GgVtyMzXm5OCtjyCJ1kUeLo9aFNHOiGFgf87.LJFRU9sDTBanmWZGRulu4ouUlCN0sDGIsixOJM_lzh.lmG8wMIfkUVF2rzCsN4TSck4XNwomsjDWSJG3Ws0EUxYm2ElNC7BcgS9flafgIs3rG05988LN28YGrcla81fOLn2tP4MIQIkSHbh2Ys0YVaXETL7b28opnlfnP1_adnrNiqsveaOKK8ok3I174tXZKCaVTVhX9HszRv10tAJbjZf6Ul_212aPpRXnrx4_tKx8f29ULFHFzfR5XPemcwEjXgQN6R3Yl01WJ8XdgOtCN4OhXRnnCv43iszUgADGXPkPMN5aJKRc3CYSDASiwbQhVhPbUpCtIDwN59Avx0RxNht96AEyjqVq2sHAFVfwFN_KSCzg0RXP6OrcLb6A6RoD._kz04COCUXdRqsjc_kaB3rFHjnvzJ_L3Tdf8rhFvcFJzPVvIRDqtHHqtyZAJQ5FwqKvy7JwUl9H39yKyDrdxArk.JY1OTtLtScpPUBXmDLWKNbQnDPMB7y29TphPwXJ7WO3vVF93SNSTd.k9rylOcs7lZhdxrcVI78PIZlBAGIvnec9H01ojWUDIbS56iyk.G0tsva1jvaMGlocoPz3y5X12.30Lmk2BNWGyD5VSup.at62bM3i4sJcS65GABsovWq1vc63zxYQ6g3SFQv.rmYL68FeAC8f14k9MRwqvPQ.VydIG8Ap2NAAvlqV1jmdgrFLdakCiMDQpj6hy_lh7Zj1zaqSg",mdrd: "PNQF_0XhQDkqWg0HvyLVbvIjGQ62ULkv_5ttj2IEmbk-1739186251-1.2.1.1-pRY1wZemRZorEhxlDOHy7pqIxLcuzHosMXw8z6Mx5g3V0Pn23GrwVTpzBkgPnlfyPvAjalaAWba8zUEVBPCGgbAyZUFHvm64Qgqn4qwdfyI6LcSGCfS1PgNTDRvPmG.ddE5G2iz1oO_QSwCPf9_KyelmyYxWcdf45AtQLuh3lGN1QDjMIzTSk4R4lCI3CHGUxkOPLj7RfiUsYykA9g.rRCpDGWtMjBOCQkEmVUGeVqns986r6CEev3JNeN2AY9IjHBHQ7EFnKBEuzznmRpEp4sD3AeEropR87zsU_2X2z2ksbqutCS_CaRn7clJaqRj4vMFlQOsa_TdbgpUd3B3eqvIo9ldVPZ_i2fzYgx4JCYFfFe4I.oB1eVkpoW14_scdAot5aZxX4ihaD0f8BlMMpIYY78s4N5ly2LfeU9UFO01Wo0y9wv2q70w5RN4ass6ZZlJ9uUVUao1yYeixvNvRRazvBz1Pd18M3LRqusBATgfWRBOScp9SgTvuqhC3MaxRBjDZgEbqOkSKADP8iIndXuIbkaOruunXopgk83mI9shGLyZkHgpoXfXfX7rTjJCLNHMbeDDmVoSmy3O5TDbQulm9zksl.dxQNNOPqZv8umd2ecSk3A52nuUn3ilsKl8WfYwPEtaddFH40sRnKXxfQ4hXcrM7AdAMlCizSubRnvWMbbOxJpq0OBPpXHp0YGZXZcXGECFb5gKJhgVYQwCyqhbCPBKo2qkAYlUFk9iOoz_RzMIu.3doyljMntCAu7NtGHdZKmJvkddzHND_i2I6cqEd1dt6lGpkj.KaZPuXAwFh8YdQfJJ9aNsWO2VeWgbhaw8oF5LdvgCuQjlFbwn9GuiC2Eoi9tFRdU6xJzW5KxQWnSOGKWjy5sDsYXAPLBE9rUlHTLzF_x0N2vHBy3i4iA_k_i6wUVpF5zDC1D.3vXxYwh41n.H7kYa5iRC1Jj5zJJZdiHY1Gc.6TfNIqzlnHGC.wp1B_Ia2V.7BzBOXbJZvB2q6tiZdjfnMjS05l_PPHkhOv2G06nI_MxlfJkhzGGPuX8u4SuaXRq3cnrE.0qb5KrerAVBP5vmabTamBj_F_dSTcH9N4E8jF2orPOCMJj__LSqAW.kagL8T4r5SVsFDF3yuC4P_b9vIk87xxv7qG7tmYvefkz6RWUsYZR.R2EJ2GmaGWQYMxG7PDNxrqQABERRS5IoJt2TpQcxqH_LKV5_awiV5vBcbEk8.aXTTp_xIeNxs2tLH_PlJGRfS183FTJBz93A0n.eMocM3MZZqmK1ZyHAYsBUT7D_QzcgHRNRd0ZDZRlUZXVct4IO1EhCQ159pm7ivbrTgnpH8WocfeouJPUVKiy_W89A_OXy2Hz7UQ8ZKrYNnZ4H7tIHIEE9tXTXDw6qwT8gIiDaCm.VKGeeyIsxo4RR5cKx8GJ32PHiGfwziUNV9.uVboFM9Zor2K_SLKO1ZkglVgJWNF6Um3xabU7ZAJYTqBOmB5xpo_GKdNUihOWBLY7wcjLYfzZAPZcjlYNMVPjjGS9XQFcv5YWv5uvcVtXwhpq4vNjbeXTAZBienVsyiN_NiWJ_Fhx28MDt8GxFM3v8ufDfiE9XRXGoFY2dc.14Nqx93QDRBKjY8Z60vjSJG5Khs6mv7Lo0lNPj3wHYF_WZ9w1MJ.mxOfWb_WjHraERHT2N5T.r402yUWLjahKAgVsEwoIDpGABe5SQNg3b_E2VodX3aAmjcATkPwhiT1Oetm86bwvYgyIGTtREAWJU.iGH0zCM6vpd8_uvUGGphVR3IPSqhyMIfL.sQqQfvx7dpvGjPYaTD3KlT7IP2e37_tKuTiKiU15.kCDIMW7ZXq1mTh_pvlAB7"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=90fbb178ce48dda7';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\/7460298531?__cf_chl_rt_tk=n.ThtZdF.vTgl1qi.yi0sW0rXhCSNsw06sc0itJbwlM-1739186251-1.0.1.1-V27eUAGyQmJLEGE3LeGJ6nghRUa6kKxcS5mAXEfkPuc" + 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