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-3495601782-gov.caltech-edu.pp.ua/post/3495601782

  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-3495601782-gov.caltech-edu.pp.ua",cType: 'managed',cRay: '90fcb453bd25d6d0',cH: 'fi0L7ZaihrkmtyEJ8Sp.KiM86VT.9MwvNxa3E3zXFaI-1739196854-1.2.1.1-NuwgsMc6CX5rR4eRCRrMo1V6mXySEN7As9s6H6fLWgkOvYONsz_G95I.kIJGyBi.',cUPMDTk: "\/post\/3495601782?__cf_chl_tk=T94vl3d0EP70gy.Py0NayrSjlchVuz8udvv1OLNOQ3Q-1739196854-1.0.1.1-QlKxIEB_m5K2pMZv1nLzRU6.EJo8dVZzueVRyfaJTYk",cFPWv: 'g',cITimeS: '1739196854',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/3495601782?__cf_chl_f_tk=T94vl3d0EP70gy.Py0NayrSjlchVuz8udvv1OLNOQ3Q-1739196854-1.0.1.1-QlKxIEB_m5K2pMZv1nLzRU6.EJo8dVZzueVRyfaJTYk",md: "hGw65Dp2e6LALpBvIZG9gcv4DI5frjb2gHnEGXTWQt4-1739196854-1.2.1.1-PS4HpWkzJHJd1Lmwdb4GvBPOqOsvID19M90ktEhxnS70ScAZ.og5GyPpK1U4tsY6yEWS9TgI81uB0dYiO.pKEkpg4OVVJfP66_61QLuhreHjnHTTTriAmeJpLTEzKdtvT66yZJDcj0QMTSxnnr67WJVH.jHSFYZQyQ8Y7TtbSmKurNG7efBGi0WyYdkRxSBGKLOhJmmcNMRmM5JkX8S6XxRuaCbHBn7L8HuWanKLPtL6n0ShMeVi4D2_y_HMccr6dWJ4XDx2yQrJBOoRz0DKnicU9qRWGnAxBBl3ILqKI0WZ4xme_Kp2HYDRla1jsfA.UCNXSTxlAQILWm_r3GYR7lEBlX9w2VUQ39jrjLt52gX.pIbhXCuJQTs38OG.SyMwCdA9exPtaI_ZL1O27109_58xYgw4RhKkT124MJLJOVi96OhAR8kB6mgkxFnvbQRlpeL.l5uC.9f7PTYtkQkTF8XSQKZnyuZr2.RtjH_wf2fkt8SQeQTAojoV_oCgEOLNU61iGxIeGXBe3YbyQHfCepB9eT4Ydryp6t3fITZLBGHF2aexSQp7yZMrB.7GJAh0uWLJX11HJ3Kln6We3aHk1XTGBHEIZbB0sATIOp.mME_vPSiiYq7bdinjM31knK.4r3SVXESzaDXUkHzSuwwSIaUK8LbAv4hmN9x2bp.Y0un9mr8RfEWTbzaNGTMEqprBfNlmdahxeV5Tvb97e2GI4yhO816RLZB.wSc19TN1Yiu1TQGWx4uXmwYYD_0y9BCq4VL5Aezq.qMahh0ZJ7CxtsTnmRDlNsGfOQrrIs2jN8tM9.5FHbvZ7_kNEUBEXeDwsGLCKCJy4EewyPgsd6xvUGkC7OM6u7HsBY1JQr0EKkGaRnmif4dgzNNKgU4iHcdG1SlhtG18kjKzObm13.ShswJigI5JfsvDx.oaBUCbs9VDUEK19zKS4zB0eHVfXL40a63iQzT9zpo_rMtRwJr9CXQ20XH1xbdUFq4ULI7yClIYbr7x_UFdb0rnNq18SmCm.DNlCD5gBxD4ukvY8SZJeZ23gQ3AXKm0QL1qX4AG6a2KquanHHh6RPfLnNXIkCIRNbhoQWCOaSli5lrfYijXMVqAm129xfOCnzdQ5eZ0QuqqxxO6SSl.mmMkhUDwlf4YDkxjkdYP117Aodq_wIwYYw4.6bIInsAnLgUxojTW8YDcgAQWWYfH3QXP71kjlQkOQ3dpNXd3s.DERlFL2Fs3vXRVnJL76rqKi7INUbw5e_DeYGo6sqxsGz.8NJr6a.qc4X9sl7ge7UFbeHIl4HMCYLsv09ZCZNpeuh3Ab7Xi9a3LQOwcqMTl0nlU4CQHStFsKbgYNdbKOmR5K_GYHATAqnHiKP5KzaKXVpm1lVqa_JbV15H.9n4ITsPy7.1p7XeOz2ozDuN0PXMzPlTCnljg3oYkzptDVjkG8bIq2KFMJuW4JKo_zi7vUNNj6ioSfTnvfqqzl3TQ0Dg_KfDrrZo05RuaxUfqGa7Ll52nT8Yiaui1CPmQaIdd2dQYlN9mAMkmjpW329XKtn.f4ZZLPjhhz7f9HChFx.Ie2xg1mvZQeK9f9qnnXTz9BVL4zzrygdN7Tetn7.HTRElRWwSfKTp3aLREv0tJXrnh_JvW_gPRxAAs_TqCZIF4hfIYFWWHOt5sbeimH0fq78MqwyluvUaPJeUyitWHOLy9DTVHAzdt4FE4Dt5aujOx0bizG2ZEES7j0H1uV0Jt6vXNEqt4pN..S2N2IeyD.ymCXjKJneNpSJXKWFvKvdWki3yD8UaqLpg5tg.OykOy0LQheWuwdPK2r9eYHEXoBoB_h7Xf400Z7vevTrVLP2UcS380jXsGpirXkd9ZRsz0gAIScDHsVc9yGNIBSfzXvjAOBWZh9CWWuKZJto9q3A4A6IZI8gKOUXSGfEG4WAdYJ043ZjJcDZkGcnMTvDcW3JwNhqzBdSw7XVjTuBTIaQoln59ZS7yYko8Rw6Lb.6f8n49O8fB4d4jgLYDHMaoQS0dqVGC_Pg7B47Riu_.FLDNZyjCRK_VNwvewluB.Dqn.HX9z44VFYJp3mGWIh4UnIBYD9.eF.x0OJ_wqQeL20jMEUGj9aYbicRwlgMCKVi_WMwYaaNSk7U3_mo4pANRAAaH0owqcUq9OTglTVbFMeHYDLR2LEkiuF55BDLE083etXd2noPbsv_9WssMdQ1NbR40sIWKMJTSvScGxWNl3Z6fpORn9Br80yw8cgWqK.4Szngj_FaAewp_4Ig",mdrd: "ISr60vCzsXl7vgHJBzWRfxRbWnsqZc1cuOgz.qivlig-1739196854-1.2.1.1-FdbsvZgq6q6TpSEWO7vqwQpZCkBpzt1nvTaq.BBGFhwe095mR8LIHLm1HKdoSoH2rrgG5a4ZnrrPRBJYpidr5PC4UjXHsuuZ1EpDsuj3NFaGrEdsTZJ5nsIdTufg.9jwMcCgBw_haxJsh.z_2JM3141bF1.6YnlRyV2duMwNpIxcFqZqSXLE8_PxlSbl2laXP8yIC59qHzE3KkmHpQtDJBQP1MC2VrIvTyKSj.U3yLgKIXB3m5KOSLXt1kopavsiOSJT9qFDfI3sic_E8ZR_ps9LwJ2cuKBlIaauPgy1FZ5O9tchZR24W_H9Jg27V3.G4IXaQ2DWpEvHpXivWtaF.8xuSHxBiMyPQxmXXNKJtzoHDihEPraMXsJMmLDZnM0X5p2_.bHZxJbG40.Dl_zm0PMRilZt1M4DHW4lJoDYV5ekMNaxxycwidJZ4ceKMPdxdrfqjidvnttsDAHAW1aLFJ4X8Xn5hJQoclhEja31bnMmKOiRvsuLxdFDhNo_Rd2ChgwFLasDePlNzOR.YnYjeu63Me4n0qbZaFXzfHZECR5qpxP_eSOjLcz0anP3OBtYBhjygG83jDottL9RbbT1MAEhCKEpryJQK4XFRBLJ59TSOpd3DcMmkYLYSz0TAor4eGb.bvXs93fJJxcA0illyzO.cArgZJ8Ij3RYTcrIi_8SluVJ79_URWNFrV0z4lWIE2ySM90nVAH.X4jAg7D2THyM0aYz0HdhOrfaJ3Ygg49ZGMh3Z40AqrjCeUE2GjtuirjW5N2Nrt2VBHiw7rkYcH6yJo2WEEi_CF.9TNucr5NS4GCsfOKooLIe6sE0pi8D0Q8nZJn5EG4Rw5nK38ENy3WOghEWAbr5G6NDyMZgFfU7k7shWj.MasnIXTyPzMRDZJj81dZpNJVvEYTNtWr80RmktVVC0lWtRrAcPUKZWu0iEbYAff84Tq27tmqje_h4mrPcLqk.ZdiaXt7RWIwH0ya2o2iF238lJGwTpwjKUfl3kSGfgxIxfq4nd9RR8XS0oJq0nQKs0RSuybZjzFmK.smvO1xt.fwPj1Fy4ThJqinFg1soRrm2AOMKNxCvw3Y54t37K4MW.XbQWtd7kLS2i4Dv7yMOiO_FP7lgfMPXA86A6xGV3N4ETH1QDt__5j9bIqzR4k6rbwFSfpPvIE4SX.2Nhn_tZObVJui9XSjMHxIu3W2CGQLc2umQl2v3xEe9XPQWQZDDTWov7dgQ0Dk0WDlFefRTwfV26Gnh18gZbJZBGzPEVaKSSfnQLU8LDact7wvHM_dRDXzo1VZ0jEHWHVOtZNBRiXkM.1aWR_deoQ7mnwabRjecLWwyy4EQBN1k6acbOMfAWtnyphj__Oi_Sw38zLoOgnS6YIdene_qx1J0eZlyKleIOqS_47I2NT.8aTeb76BmSq3BqYVeJYP8Jl1ZHCv4a0vyayqL5yjtEvnRYAf2wfxru3K4ILyOTUmVDP0RQE8cwcuEladINAIyufDuMSXV3i8LAH2lGyYwjq5fc2GBEwRPKsU6rLlJbaN5sbtGObZYr02GI1UM3tGfQ2WEGoXYaeoO0R24L3z1neDYdMOzWw4.uKq8qbCDPC_yqK8sg0nOylMskkNDQHbmrHUba34SfZtslFm3X.Xcb6ibvOj9xF8Bp7HVQdWKfblbnNXfYekuDcAIPcAff1FQJr_0_5xsxOhVxrCheoWGD.U0FD.YKdXJ3mSC2s3uEo5LMGzrl_DN25LdpCmwvEix96UemrAUXzkvNyOs9cHmEbOURHjbv9L0fiNKl6pGsp6mLzMbnOZyvS4A_tjxAsh7iwZQg.rdENni9G3z0d0JgyEmPe.4P7Ya.CR_Mp42ToPk"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=90fcb453bd25d6d0';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\/3495601782?__cf_chl_rt_tk=T94vl3d0EP70gy.Py0NayrSjlchVuz8udvv1OLNOQ3Q-1739196854-1.0.1.1-QlKxIEB_m5K2pMZv1nLzRU6.EJo8dVZzueVRyfaJTYk" + 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