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-6154928073-gov.caltech-edu.pp.ua/post/692842662333

  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-6154928073-gov.caltech-edu.pp.ua",cType: 'managed',cRay: '90ff0167fc3cd6c4',cH: 'EG5DA9KpGr_LT2P1CKCXkUov.zBPYNKeFeNWMnqwfXI-1739220983-1.2.1.1-8.H3x1mM1wyFKZK2i7QL_JiZvgTCUAzOt3l73jI_Ght7xmrCQJgGzVSl_kIi5tXj',cUPMDTk: "\/post\/692842662333?__cf_chl_tk=Z1OBlUDfltgRl4PJeD.V_FCMOcYMfWAi64uduaXcg4E-1739220983-1.0.1.1-ZvKSuFr62s89jYeX5cEwvmwIXhOHvVKWFJBozAodQKc",cFPWv: 'g',cITimeS: '1739220983',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/692842662333?__cf_chl_f_tk=Z1OBlUDfltgRl4PJeD.V_FCMOcYMfWAi64uduaXcg4E-1739220983-1.0.1.1-ZvKSuFr62s89jYeX5cEwvmwIXhOHvVKWFJBozAodQKc",md: "XSk5qyY_1cfGYvbrPgQb67UR7ub6iPKbs7dlfBdBdpQ-1739220983-1.2.1.1-MqduuGuhNsDmpT8.JT70hGMNpt.CF_IekOZNqtT.34ruXqgYrixftlxcf6sArfBnO.Kj5tjSxMaTzN6mywWmUb3c0KA9jW4CxgaklvaDNZltEeg6L6hRdUDHNyP6LD5aNIMdOGNrMxI8h7fR.EPYh_Nr67t5_Ma_2PL2OmqG0H0LBleqbTMQUNcg2.8xX_ZZZbfQCrQhtp4CuKqbsC1RhsH15Kb8b0.IKR2FkOjZbg.5IFyiiONtJ53EZLAtFPOVzNufAE4oWpx3CoAoVGgmlNrIXxpVZUwDkfjLSUsTxJV8nKX_WKi86uU59751Afxh3V2wUe3Kp79LXUsSfe1IoW1dSy3h8XrHsAh8yn_pNaBT5OgIM5zeDXTT_sSiEDCp_uc9oodZyjpCFjvzdIr1xAY2S_iXKSiaAX0ftvopc7bA8X1BeTzwwhzOJauSrwgt5XWkZXiEs0rcwjzdbsZHN96P0OH5tonvTevKc9LPjStRlmnyP4sn1KJhEitkPY6SObo5TmmNvQdmi28Ptp8FOhz7YvK13PLV92VSBLjpr0.A2ddIzu.VJnwMlsjBJfWVz9jyXzRqv89dqQnyXvopheplNcXyjyPWs9VvZanMzuX0FpVRYfzkxuERR_GGQX1CPKwcHbzeTFClJyhU14dHRpaMg0cHJi1yxGwHHFxOAEp11tiSgPG19Dmng5QvempGPh.AOwAoqTjm5Aq7yw1b5eKPrymrzs.LwVUO2q.k_GLR73NaWW2qinDXuYXToffZZa5CplaJNslYsFCv3yjiSdGjp7jpW681rd0SQTKAnzXeMcnxCGFRDtCw3YXpnnGUHsIFSoIGjXgJqtgwzaq670MAs2fQBbwQid3MNsnw7Dn8ni1_Sx__v7FXNyj68VmnsCK3aRN9g6V72XNbc9fLivRnlf7QLHGJ.yJcnyk8cdRKTr6r0N7R5zNGf4mnlomxgMnTpu5otsRtPYWT1BvLJ9bPkrPf0jUUv_adh713UWxBNpdIJDp.aOTk5yQBcxjc2lF2iEStAVvNnG.TfEViyUkvFXKUdmFcACrtG5vklao31xU5HFeW28uEEJ3Yu9AuBmUffJXn6LW.n5s2pQW5vsOJGhWVfNbcw168WgcUvqQkyX0oQpRxh.f6daqKMulFDjcpF3Uh.POGIFWje_5PfR7HrmNZHFWNr_Hww3Hkc0FWAf8z0COeqOhEMxf5sZwWjnqv8E_DD1yEZT.y712O6srMh79VhFIBiByb_mxvPwmd_F_wABC351QvxES2lDgcHmUjkTtXxB5Dnk5Tol1Gat_8adtO4Vxcf2vxE7lgJnDeLIWJ38PoAXPOsXdN7v67zyRQfVbxcYICO5sz1D4SPOObDD49GlxIr4lh_iRABWTGUipzGM24oyEhpefK2oxF_3zPU96lRmT5jaOVNF1RJWuNIqaC6CpKvYOGN7ckmjS5aAay2dMbDwckPPxA5OQJKXkAjYhajAsWVfdlpdJnUHcW5oXoHTz8CM.gODGD7ACE5cGcDItpKxk07PLlAC9pK1d5j8_9ptPxY9fuVAaiYQTwvm9oF5Phz4bXakKx_a6gPmyR2bcBHrsdBd5OpKtlwbnQIKYiOOFJPgVErozUUywr9f5yoVckzcFMdMllVtOCedUH.ZK_lGg9xi2HEJgGHMF6PJ1d.Eh3VpD6L_X2MRd.gHtbqe0ETElcsZCpfmUIhO12Bdq1um8r2pjIvY_t4UeqaX4ws_0X2tXAw1fqZ4DgL2xMDBla0lHPoHDxntFJUBWwKNN5eWtcVbak0k_l1KeXSBqUInCOmqBTOT5_zIR.IFaNxkfSyfySSaKYKoY0Fmn_ng26V26hxE5W4iwWGiAThMvFeTvzhmdV2.HtsbE8bN73C0oJmrYZmRaTf3vchTXBKiK8ERueqMT6xkw2YdWHByP1V1yRxj9Y1fPyNggdWXKvEvPL4SKaWqO9rP4Nnaj.YW8V9zV_GH9hxfMFKdcN6uXMJUYMoQZn.oaipJTeSXFkNfHv7ni1uryFerwNLsdV1xvJ6_T3S9offrNKel1ze3tuIHpT6bflCXgRL4CGStNuclYQG.crad_H_j5aJq6JdL8TZCLnwUZFFwX1GdK8EiGb3WAXmLb9DMwGb1IbeaLpWjXzlIW82A30gRT9nDKr_8NJnB3Cylwu1UYo8o9NjjfrOGsd2tmWXZty40ffxuFenhVYw3v2Ub0bYLm6796qQ_mOFTHPvhXzSCyz96FgsFYyxc8blylG8Md2BQ",mdrd: "qfJqTU_5PeoTddI2IJ6h.9rLfVyQlHlcfLgCQT4sRes-1739220983-1.2.1.1-yDC9Sm125tvHOFtlSUTJa1GvolF3a0.sqApLhMLqn7_c89zR5KW6ZiIuAndGOHrOSABO3lBYj.Y39S1OBHuU4L3DcPPkO_0petZgWn7w0aX9rq.YqFqFSmWmY.HeuAcvR4zZTGx9E.IXmKvAK1tTHpsaXfQU0QFAtrESTJVA6Exo_XMup1xZ3fCZUsqswKHD_SQP2bBUAvHBOYzc2_0iRhPi8vi4xggwlT7Qj9JrHMBj9c6yW7muD3MYWzBS2i9sti5JwfGIJftPjtVKz2Fuln6nBc6LNbCnvtTjiLF6iHwQObVJV.7FWIuyisshUE_HcIX5CcVYgSgBqsDcAP_iZRznvLLik1BZEOQoDqyOkOKjxyDRzRw54jRitsEyRdCMC8owLynwLJ5bERZ3a6FlOy8HYxEp84hEmoAys4Zi4TlaiNE17bbGG1f3uZxHM9cmjPPpyyox8tTzQGBYl0hnCtpCJzYeMvdEnj.nAFJwWi7dtwAqEaGD2clZQkl_qtUQgQf2i9Ulsfjf70LOjnM5QhwRSbIbBLlfEmfDebd1oV1oZyyK9l4qYSa5fVGdAfYQ4iGKUbtBDWW0AilJc4U08P_jhSVBxkUst1.kMh4LrFs5Y6H5qKOHO9XkXXLvAwGwHHAT9U5Ig2W0uObQADoMXj_EbNBRpPayIRENom05_UIjxdHkMxEh7RAufm3CWSYvg.eHzchtj0nuGuvxax6JiVjH7pra4zyW4MRQ8rf2l7UpQjismH4t6T.mpABXK9yvB.Bpf0U64lZ6leLMuFSn2wi4mHpf884BIyDSctYT46JroGDM4rFUTzQhIKpxD6vX15jzsWxhlcwixK_MIK2ozPcQlgaAf8C_OxxDO4nBcct2C8dc_Y1jM00E_EoUcaTrb9KD1a0t.A7Or0_myB0DscIsyxf4l4VbwIjilxIO6lXlFcnBbzh_EN3dtYm3L.4K66rBEmvYvU0kLIl7JRSWoe74LYwXlOPpvBO7tYBAbem91aHdqEiFpu1purl6TDT.TSBKKh4AaX8U7f4ALsMfQiLnlt3nHhoO0Y286t.e_RD4Dw2_VY.JvWhDnIYYVMRNeg2lcg_IiT5gdgitpznLgC4h3tBS.LXMr0pB.yjusdC4axu597yfGwH.64GGMHGiI2KtgYH1jT.DW7P.1r3RSiDmUs6672wNJBMsH4qxkvTsZfe.2x1iULWbP8TWYyfCSeBQ3NI3A8uX3L8gnMd4Z3AhOeaUhXjhzW9jWaYj7LkvJf43PB0qgadq4LvoFMJ4Q5IJ_VL62xbKLsyoT3TwQdeSAz8MhaWyL35pQt950WhJI2GTsmdjLo1102j6.9uqEZ1PTngCVDogHBpfXGTg6KCbea2n.uQ1hQineG0serCkyDBzHOlxby2y29h0_Iu9i7Vnc3MKGNXF.l0UsYv16vEptg_FYe5fSRt8nVNmjSGHZW_JgLiC1jtm9Eh_gMg_Y4OA9utPGkoeCcsrjgXKXWme87O2llWy1QujGcD44oRwi_CbcaFfoX7WEOzL.kSMYrU6DcurglXaBKs_B_4gmWm1tgF5ssqMeJgNCYdZz3PLSjjaIZ6_7p1FNpK3ZRdxO4LhLJCj.YsMKUZ6dO8ddrJvig7jwL6BnPvrwF88WdjgK6TR2Q5xiD.Y2Umf5iV_1rWvQkv_vwafYRjzLR0FPC9e5Uy_mX8wtoF1jkSfwE4cg4bkdT6ddzCrxX_.mAkl97EkWvPA4E2RE.VkIhTX8g.0ho3vpv5qEDFTa30watzerzaql12uVdqQBtEfgqe.Fm0hjeLNzqRby730KxzmqxNo1Kvad83xtwRxiMQoxEDB7pwaYvlaG6f41rVcjhBd"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=90ff0167fc3cd6c4';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\/692842662333?__cf_chl_rt_tk=Z1OBlUDfltgRl4PJeD.V_FCMOcYMfWAi64uduaXcg4E-1739220983-1.0.1.1-ZvKSuFr62s89jYeX5cEwvmwIXhOHvVKWFJBozAodQKc" + 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