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-2853170946-gov.caltech-edu.pp.ua/post/2853170946

  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-2853170946-gov.caltech-edu.pp.ua",cType: 'managed',cRay: '90ff1a5dfa903b3e',cH: 'VBupHcHFqvWvQv2LqIAVXLE7BDOfRWcLTIuZ7MwmXyA-1739222005-1.2.1.1-dnbznuAX7ORrocO1nlyTesbV1TinMwEy9RaTqbnSqeHpgYxduSLm0K0XRAF2wcT.',cUPMDTk: "\/post\/2853170946?__cf_chl_tk=GYbc9gXnt9If0ll3WluL_i7uhxVn.2s7a6SyzhZfd24-1739222005-1.0.1.1-Ndfh8OPHrWRh7XypWp7R_FgkEfHpc9ygdxewTaiJMYY",cFPWv: 'g',cITimeS: '1739222005',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/2853170946?__cf_chl_f_tk=GYbc9gXnt9If0ll3WluL_i7uhxVn.2s7a6SyzhZfd24-1739222005-1.0.1.1-Ndfh8OPHrWRh7XypWp7R_FgkEfHpc9ygdxewTaiJMYY",md: "t5zW9GoLYCXV9ZKGCb4nFeEXF5qV2ACSEmZ8enVXDlA-1739222005-1.2.1.1-EtfE2fy_.nA1RnhndXCCF.bhxZBd.QOHStAZBV6NDjukGvktmDn3JKkdK7uArq.mtKax36.oGU8iPS9IVeAx1c.FpmdErHFb6tq6Y_PGRm_GxuiU3FbqUEOZyqQuE.XKb_N9H0_72czG9DCiUQ5ibk6Dz1Dy1j5eFvbT.zmbvmOg.iFrnAjNQSzsUT91cDOFTYgEL5NNsjp1o2wgA7BxcFusQDmw8gqiK.mFdoLU8gnQ6MthSIzNssfgrZiaI93y4adNedJu4LztOFLfJzrEhImNmd.jvFBpT.dv8R8bZjMs8RKTPjEIoXOrDgc_WmHRPGsyHPYciQovVnezAvlsYpq.h2dlTxeTd07RaDSkIgr3GLPfGjEAczeHcw1JiOmVJ29_DK2OeM5Z2npTVj1bxF.Algux9GqTEoXTdBdbjS0yoCE1DgIxUYBEik5dYl5GxrJiMrs6ooSRmegm_QhSMxzM0.yp6DqVdkPrV_jGDXwXeirzaB99NLe85kiZWSyXZ7ej_bb3JYd7umDvVjeWsNnOuazib9IWKEwY40cmItyLqOGqeiSxne0PuczFmuQMz3Libvbpj67av4jkU00jQUq63H1tOnphdjLeCgawbdci6mjFIx2athym9j8mhrc7zFz14.6idY633WJLjUmMCGJjiMxPY9C.7mCoZ0SrLl_7drW8iNPSckP6qP0hzcKLG6k2iXbE.N3_0C77bO8E.6kK5BzbCFP87pjmPuj.YFsMllRetrxfUBAPJPTWfoAaOCzJbeojCxSF1lidOxl2ldPd1aE31b_GWYme71s0fHwb1bCaRj48WCOksI8Mftv8mXhFz.f.Pl.Pz4Casvyhgz28NI9Veoam9XR2Ky36gJhFTertS6l3ujXAb7ocYwSZ822fqM4J8yYUGgYm.50VB1a2F6z9ctBfNZmeddVCdr1bq7qIZdTXZ4ygjKGPxptPLp5ltevrv33qNv79.6Sm5Lx7aA1yB2DsK78KiODK_1rQEsttKmCBC4UEOIW49n1cx1HBLWmU3Ds88YZNhrLA6cl03VioD_DPZpuJ2SEMvNBOhpJnBrEknUpWcjVVa8lNAjJjCdtN4K3RYY2f5s_YoGysmwLcrZFWFvBVyWbDuFCr_KWqpbKoe4PMXf6eStvgDpf5nqg1y1qO4YdrGlWzEvaAFbgU42LKPD0gNFhPXjUyRrrwRhD8B3bxdJ6yb3lZizezDUzQDpvxj5_PvnXtcb8W5y0bkCPREjKezvPjMv9HGB1XeW7LZ.XLHZWArrb58KmfhJJQvD.A_0JWnmW8j2Arc1v8ugsyNewGDUQgdzMqg8sz.le5n4mKD9jG2vPLxLP7tRvr4vYV63MZveLcYul0u7F_vtmwpe98lMFhKsV0SpUgl_naVgVQr9RmxsSY5qIOcMNsb5v5.wCl_W5B30Wvn09uauFzxQupiCjeyvsHxZYVNnNfkGqGOQYrzyGyGUjP.Y1uNQMTdShOkogkUqM9.01qfaoBj9TCQThfKg1xRzZSNq57yq7i5FR3hfk9mhbeS5j.veI5E9f.DFeBycsvd7CibVNvJUMJiOKgCrmpdT9ImLQe82w.EZZ42PZWbfUf2i8HLoOE4QkG70GdA4jmIHrmHKGVeC.j8.cDcvlspy9eHsdCA6aQLvxkCo2UZthbcU6q0tcZYsFzZUr6jbh_ofqmwC5qLqGLJ8jcSYvm8JLGvp.Nj9aedvDvErweiIsm72mAbXobkMKhdL1PBH.Y4cY73LJXWh.Yg4dNL2CPYL3paY7xDhUg3Qu07NrSQTepMzIGdQlkOBqta5NI2tqFrL8ljL3RsXELmds6tDmJPg7iQVnNIzmzyBkXrHt1QvmKc2RVT4bVu9FaDR3WsGgsOpNkktQHh0WIdIF8ikp3Hih9ZhUpSiummqHrh1_itYs3h30gvyIaQ4B6_4O9NkWi9_fju86YkrjI_egFkn5O0tI5r_x_uQd84lPZz5nwJdecNq_gQyLH.eF.tiM6YxB8vwmqKJixcSfPrZZm7OrJAm4kvL.ito3rHqu21NWSA_HUbw4_SkYdMC0nI26i96ANnma18yb9V5yp6EelePYpRYeBA8.1LnXeD3dObW95roo_mNUtCRWyGiRlDfZztjw5mq8yKO3EEInnVh2cyPLOpLyEQl_NdlsWqEMWs.G_LREfzlyUg78d8C0r1vRWo6H8XXPlj1Y44ILTEFozTnjgMamR9jsncWtCjiaEVpn007OqMr5mOVz1QUHtz5KJKw",mdrd: ".fpgIn8HzFxOQ1.3DQGZzZo3IcW23ZFLqB5d.CGjnm0-1739222005-1.2.1.1-SeIWY7eO39d2EdReHMKdH2PbTJKQiR_peC06k3rxnsQoSP_.FMd4_gCPkcu9WdF7XUTcgpaFoDMWaKXi4jgqE3mZtHvoGo3PXfjZECBdw1O8EOu4trALO4nrSphiH4iAP.kq_85DstwkHPw1ONP1zlhXSUW3KYqQYoai2cptWToRBtCqYPZpbujm_XYcwBH4IpqtpF7.UNf_F8Y4X2g7HCX3rxBedJ3PulhIcZXe8MfVJ86OhTzYkS.k0XEPzULN3q7kRYFWSmwPpnx1AxRtLR3wIVBbxVSVGce49Tu8WFHtON26NJ3Wol_zDnG4O2GCqCa3jowAKkGt4YnApH.fBaldO8CAgnLQiNsZ2NoDJ9DE9wttIKCN1ApAJ0Uhlfm3e05IcZOoRwwfZzaZgiMU6k5YuIC_fYarunYZIsiuA7gzjrs8hEuXaYkYnOZszJ.ceKeUy_k8.q64PwlvqootXJlLYoiHijAms8KbcxyiJ06Ybjb_7YbTe1_guiZs2KLHdo9WN2PLnO3tDPkA.rFozBnPCmdGuWh0eoZCyLwoMk8kxOukf.LBcO6FcOlBKm6rQKZj1SSaarwc9UgS5TIjtqpLWcOTTLgOXtyMhhzkBXy_C1D9KMi4aNSt_1fkNdHHXPj3U8Bz1gtmYdZiIPeTkhb6Zekd7QstIBqrTLpiYkGs5aI1CDFoFz.zleMG91DkIVQlrRV0T8DjN518bUCzGJYVo2pgBtQZjqWzCXy2zBPZoxV3TslLNWlBD8FoqQ8ZooAhNxY_OVJWA_3Z20rt.fADvyUIngHsEMcDg5Fx4zwG8an9hW.snedQxN74_SuorA9pu9ET4kH5WhSq.zopIuAqsQVgJQe_WG5.3Wgpcs0eX86btKoGGWhR83HdQwaTZRd7PAA6S2oBQ7glUJ4wgC4PSeegj5t4xh3h_gEWXRXx5VB.IJr7dZeu99g2f7vkA8_xqwX.KyhwW_U4l4hDOkalfcqOxVA7t73hGdC1lf2UR0bSeOO90y3uYAgTpsbtvC7_mirNTo4khtaUjVdy4PbkkYb8S.sYaT9GGQUjFoj.RpN3adWfN17wuia36hjfAQ0zlLA21BGWTKmNEfB6mOHMpfKERTIKyZTnsg_BO.zg7dM0tSelvIoj4.gWPVrhspuo.cleY4uFQmLdSN7Xddiwr9AUuyQqnOGkMtvFEtC4HP9cKfP6ADmxWU9l9y4gjZlg0fQxwhVLPzjTTurzATneecWd.EIbBEgFJEyY6qijE9dYxvrsuJyuTn3fUtUT04h2mOc8qnE7yp2Xtx2djd9guHKPpNKwunESnhc_9hftm.VAOvFjMz5ZNgPGtdNzJn972lSr0yKXXMfLM62SvUS5V5eNMkPf8kkcZO0HWvDxZSDxDTSct420WynPmC.ZWLs6kN.3Y3NeFX55VY4kyj05McYiUjUC.xJmFJ.Ng1_Oh9PQ1oABhZ.BuiRg6PZdA8mHKlzGL96wYMYgRCqUXf56Nsyqw9j5DJiSnds9SMWOW10hS6BZdaSa8N4n5RSeR09zTqX1h_o.96aOW5wFRlYYbPwYTZ16gTffNXM_02QuxhmrbmSbeNGooJZTSPWOUHlLhx.PGMeq7nRLoioP_2u8oFH6N64rQsjDF2axihCqNhgMHiKb6tiDJahPew5FHLzTtQUfTHR53E.B_YuIhlQ8yAJIh.ANUY931rby58bMjf6UgPn4.GReumM8vRaik79H7Bk3CG4EEhLJXMCWZPtDcMPdTjt_af2unBc_1x9KYfXPTikNEPAIX0smFVVQy0PZAYIs4kEuoy1VSQoM5GiLviLtLnhCX743zRcTqCAQJkHjoKvirTCHzR0Whn76"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=90ff1a5dfa903b3e';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\/2853170946?__cf_chl_rt_tk=GYbc9gXnt9If0ll3WluL_i7uhxVn.2s7a6SyzhZfd24-1739222005-1.0.1.1-Ndfh8OPHrWRh7XypWp7R_FgkEfHpc9ygdxewTaiJMYY" + 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