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-2817054639-gov.caltech-edu.pp.ua/post/914923863868

  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-2817054639-gov.caltech-edu.pp.ua",cType: 'managed',cRay: '91012f60cd4256e6',cH: 'lzkKx1h3fb2g76w6WSxbTPtUINYDA21K.Zm5hSpG5Jg-1739243837-1.2.1.1-spFr3ZFufdf7ivnZUedZj2n.n_95z2EikdSs7b_wNn3yKAP_sb7NFu3wgZbykp7c',cUPMDTk: "\/post\/914923863868?__cf_chl_tk=78cSN8J28mIiqLUevoyo1nrg_vovLYmjmUd4Afn.pcc-1739243837-1.0.1.1-RBUwQCTYwy20KTpJfTzfsmpoubSoawrO8dpP2gQU1jk",cFPWv: 'g',cITimeS: '1739243837',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/914923863868?__cf_chl_f_tk=78cSN8J28mIiqLUevoyo1nrg_vovLYmjmUd4Afn.pcc-1739243837-1.0.1.1-RBUwQCTYwy20KTpJfTzfsmpoubSoawrO8dpP2gQU1jk",md: "ELwocrvVooQHALXPW1OzOBgzohvLggwUwLP51x4N3Yk-1739243837-1.2.1.1-O8lsL0rkRLJCS2l_U2sNbsF8TlVcDLlfG1wxSg_kF8VMKAREAQky50T3NIljb6ZH6l6Bdq3yesUHl8InFk97ukc57aubpV8EpM8JRItn1c3aRH5g9u9p5BpVagaB6bHWfnuwfOVCKBgEGmSWuzAtuqJqKkL2GaZ5S2NpBFu0EwxDLtpfBqcmn6jU_YIG9xWv0P_.B_sjt55tbgyF.JJoNY64R3myWZSX0iNVUowwuR7Ony3JS6bihozo9pwSlOtVhW2DflrQ_rsP_IPvdNsVxy2KH8aPP3O7OK7KV7HNdBd05GHK1ruwKzCy6Bnbjx3Ii889T_54KTUEg07aWV6_PMqb6aT9tafV2jqGCPixckqy8u8y8ggtfNjJ81Db7HqxVJ2PAzxBldG7Nui8QWm.5ZmLalS7FRL9X1.gDwcHG9u2jM.WvNAv3OxnDeiJx_0V.6727DYdZaiYIrK0FDrkc6I5JLGswX5n8MeVdoFVAOSXhTROl8Dvc1Pj9R1JyAY5VASCXFwuNZRXNXwGS_YeFrbb3i1hvPQrWaod4GARHzg_m.LRdYT_CnizyWs_IpAQku4XEUGeLL1JzHoYJN0IKu2putHv28Eio8lkJtl775jAibMWjmrscM6YEw7xblo2cflguxUuynl36VzCgyloFQLkBbrvwqE9e3SHCT44vUM8NKoC6RUqT5j3caj5FyzpDxeDJy317aEzWbdByvxuWqYUG8NWUrrJ09BQFTBL2FbByaPLtOnzLN0im80hzDbQOyDEGzr9IJ5J7XiTOhNb6PgA0BP.QfIKfYYAgA2Fw8KZ1ggaJxFDt5MHIc5.3XWaQgAr7JtdnCunJC76u4bH8JoGmNN_G_4zgwBfGzL3xkVzc64zoFc4qUm1tDJzBSvISsH5AJry9kOBovEpnPtvxKGW4eWd.1OwAd5YlQ8yWLDJLRLqLAmHBJjiAt5uq9VfEIANWYt0CEYYAEUxLNtJDYKKv5tiuma6_y_ZfKBBV0VbxpmpQ2Q9lQXAHOkJT7b4MPXiS0lhjMhn61a.SI8bCfq.rbBI5Kg0g6TD3sC5epSr3gmbIQgtq8xaEHFSxbDMzblByR2vJviiSwQIAJLq4Xws5dl6Vr6yTmMxrN6oLQt7p0VYo6T9sD1mgrF.4cd5EesOMTsg3dQCxvIA0HUz_t_3u.rYMcLzPEZiDyr7EpBEpFpRt.4XFuX_ikFhj8QXp1.AeW3SQjbmMHA0MmcOgsGwXe.Zjz6pf.rIvcNMEP04aE3_So8ev_lwYTm6tL5j.JDo6.29V5FpXG.JU1eZWjkZA7aOMAe81CaqjopyH.OY3lYOQkSupCbVNuaxLJyO151tci7SBpVzctr5gSrO4Vkg3.OWwcX9lp1sKzm4X2M7gS7UiyWazV4R2_HqJxK.ML.LEX_KHm2heyR1JPcVhb6R1Om2kkN89xj9LnnroYIe0UpWAuKHRF6T6abcqaxt4vqBv4ce10NE_67i1b6Czbu3KKga5wooMqy2aMaW7QUS6Tmt1B1ugswqkpOVnQwjOhAYdrMP4lFh4IaJub3COAPg8zqJC1sFO0.j5lLUC2PxfYt0ETMwWjMXK5awArk4fvnFllNbueZlxJUJIF.Sytr7BHRGl5Gn4G2iBjA9LG4wTFjLKBsS7t0N0VSoFKyoRtcH74cz0G4W_isvyX3k2EuZn1sPmxO2MHWwiChAWGzFAp6MMbZbzYXURN3cNPFH7IofrRv4Z.g68mciJRbAJTJBB09g5Lr5WNU2YW4gEKuXGC_J8VuotMvvUyWbREO9bUwf7j2yS4KRmeFUdgTsSgDwuEuRQWvwXSCphOPbZH.pv6Vrg6V48lF5O7U3V8G1vIWOwOTWUbiegO25V4Pxh1N61fbtE5ycSBwZkMFrOjWPbWpcNgXZHAfyP1_oKXb.DYJv5GXXPgswfJOATTlYLIIu9of966I2l8NeVMTSq2rsPksxZw14ilLAsrSGjV__gS4vU1dp7ZmAWhZ.PjQCNX5WJgsSZOx53JGfGHvV2hC8xYX4IUZ1xbKJSZeHuoXummW6eWyRiaH4wHI1ricbe1oyJQ89xkn6xG9ldXsjLNa_xqRWshuZUDu2Z8iYXTpTroPyc367J6OiZ8aO16S3_8coR8dYHqhQ2rl5C7CSw2Dok29cONQa1PIb744FyRaDvcN1CRa752iQKxCCRGiVdKehBtNmm80UVzKXD.8QiCpqXI5j.84_RWWsumq_i49otYTkweWwBY.qpaNbE9qlsg",mdrd: "pyGzbZpLH8tS29NgOuRjfNeYcGpzJI4BoVqBwUmJZ7o-1739243837-1.2.1.1-Q3I2bD4SyYre7DNxtOzr9XCl1OoUwlKyJf63epf1Ttp1Ok.J3taQ_ccUCOopWhBg_5jrwUfeLn8lLLYB.P0yBBRT0BFDPz0ttvtwomF1LRyX6r3wm8T7Gkzw6.2QuL_70p2yE.zdm5EJzmeiUOWRcjIh8pdj9ifx962yea.KtqMFm_VYmgFkAyBwCTWMvES3CIzjKL92.5ug6k_BjY93TK7BtxzNIP7Cfos0zgzPRC1t4XnAUPC0iullzRSHJkaFXahrpPFvYvle4u26CXTY5g8KQTBhSnPPLRQpxsbk94i4fYheoPKHcmW5urttPMjjQVPA.ClkDLXtPunUg8r9rNvCLyEL0tgMFylf_n7.yoko.8mW6vony3ppAf7ztkZVxFyGDdQGhzI828CpFV9RPVrM66ShgqaeWvh3Dn3PjQvN4_5LNVwECk6BpntWCMPaOMVUOEoF9_Rh.p67z0H_cAHg8_GBN2WyrziU43WbS7Th5dJImQ6WpbEMC8A8uyD1MHhShtCAgQ5N5Mi4TW4sVQcjrrGfNr52IMHbDjzm0NMzpjgyGFF_VRhigO91EhWczwTVgjVdCnHynTdtXGNMwfBJd2IFEHGzdsUq_Gh6pCRhIII1GB2WxUQUQw5vaAecIfVbDL8e3VIt1CutL5Jud09GHh1L4ftummuYsn0sPwLH5pFXgGODtQDeLO3ZpoaBW2KLVFWn2jtbDW2FhBSnGdm_Rdw7VTblCEaWalqJpKwl2hjdRvsuVqdjCfLrMuTxPb9RjIeywxgDWfQPqnVmVRGpHKDYEa06zkueMBwykwt.n54CorvAzc3XFWfWMy.qcLwLwkLM60GRKz8ZSAeaE9hswwkOmJrAL9ipEdtBt6899ziMIiaLVUXMsf6BQG8V8ceaB1mdwNPKjaZhoDU6a_1nYW4d1L8xNKhwaR8T.pBXjUsjCJjU_ZbvFNNGRfsRjtgCrOTvv8gtUQSjgvF5MoQ2deet_Tw0OQSC_AcZiYTPH6gmBR8V2Ik9CveWKirqFHn32OeHMmng6fLzPLIHVrGyTkKEiroE0etiAs.QeIaGXfq195vz0POSghDvKDttWsV8kPu1EAzBSO579GHYFRhQkPDOB.oljoDlczd3wpSwkZlCb9qewm4MXX8b8wK3yoEiNfVrPF9__3rLyeHhhvjyImU4qznyAH2AYVUX9h0MvGskWLSQHkKe_puMacLHEu24tqqFuW0tPXIB48z.4eJsumTn6of4Gyw67NhqB.niXV2lSEBtk6KO5f.5T6gfvv5gkVcOzM4bNsuHJ1Bj1.2JSp1R8WWJoDOmwLpqloI7FlOEA7ilfgOlXYh0Yy5DJM_5Kzru6wn3mwluyVQ7.K64rbbTnTNWPiCNVYNuyyi4ju0lguIMj6RhXBSkj4RCKfCdPxAGppcTN0DTEDFiug6J4VBy3iuK3oZlVb8SjDm3NyOftokMglAQYA_OLwJ6qDmH6BA5S1XM80v9cuzhb0EetFVB8qHe2mICuCiOCuAEd8isbqiGVM_2V7Iob3CVPP1JWz.WIQp8LiIrOHYHddj_DXnMLVUDuy8HAHAv7bJ.5s0sVW64mlyoPsQVKfN85LfF8gvVLv5mCNoj8biC7sNTo5dJxWVS.O8DVeO.79NahhwHokJdFf9GgNn8pCh6wX5gxBdwBHJ10A9Hc9gYOEyb1eh5kc8laEDYDAewRdPCMP59dmagiSrJz_w2ycbf_DqrTkU87qa3fyPCLWgUfH6qgi.Wot8UeRvfM5xpNpJIvc6p94rWkBlpmH_ayBZfgPT1psUSN5U5FiYt_CFpQZBlzOK7P7cjTuva700bZHAgdbZzMzNvdOWOisQ5wgoC"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=91012f60cd4256e6';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\/914923863868?__cf_chl_rt_tk=78cSN8J28mIiqLUevoyo1nrg_vovLYmjmUd4Afn.pcc-1739243837-1.0.1.1-RBUwQCTYwy20KTpJfTzfsmpoubSoawrO8dpP2gQU1jk" + 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