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-7810935246-gov.caltech-edu.pp.ua/post/7810935246

  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-7810935246-gov.caltech-edu.pp.ua",cType: 'managed',cRay: '91001b7c9c1dff1b',cH: '_C5amOvxeaaHGLZFMsJLq_I.q4IvMidrQ1WOGFZGEiM-1739232537-1.2.1.1-zgPVNfdWpkESSJRNeG1yqDQSwUUoPYtZ9X4PDbcakyIcw6kovi21_.FF7mkS5V_N',cUPMDTk: "\/post\/7810935246?__cf_chl_tk=bFZNRnCss5jb.5diVKmFH.TiGMjiSpV2QChCk7ev8Yk-1739232537-1.0.1.1-M_hB5NF_CU1yE.ciTR.kBxnlMuQDu4kt0NUGRFxKRHw",cFPWv: 'g',cITimeS: '1739232537',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/7810935246?__cf_chl_f_tk=bFZNRnCss5jb.5diVKmFH.TiGMjiSpV2QChCk7ev8Yk-1739232537-1.0.1.1-M_hB5NF_CU1yE.ciTR.kBxnlMuQDu4kt0NUGRFxKRHw",md: "Av4JS.nQOl64vVs5KsBg1ItF4YD.ykkfYpWg1CoYnNY-1739232537-1.2.1.1-avvFSCTHWv9nr82UbNz2Ht_Jo3jTlkcAacYBQZc69m9rpa_9mCpDuC5hNfqfApIhk_mjrzhnkKszdITwyPeEwAwBK47FZAwHwKPpV1V8KWDqZj.qzKpIsAXJzpX4mw8ipM0B4HhbE4F.oFICVxz_qCI9LpVofkZkJN5NqojAUE0ZQD_kzmPo7DocsKIi875YN2FFFPvCTgmxSjy8751aMFAzr2VEHhD4GdDdYBJJMaFvHb70Tv8NU0NqtWectj87FpgnxqBCMWVFHH8nsOehNAWeent5vBadyBaDbvRq06tkdK68f0wNHHEDS4MyjRI8avAudtqOAFqDuS5dgQ9DxusuRJ8j4Lq.TmZTr7RduKuqJQ2yEwYkFu16yjvMTMt8gJlEDU7Gthxz4DEMe1e8CCwuUQSzNhlxM20NIc6Hd37p6zs4JW4J5t8oYmTVBsAdi1KcNBylXytyf.djIPGVQcYoVVv.1s.Ul2BgSIESMaZO1Q923hRuT8HEIcjvEEs_smLskC2KgNtCDvIYBMu8H.VYMGCu8sMekzYhh8xUreRUQdFykz3BAr94Ga.W2ZQjf.Btj.rAy8K.G6dtBnrX.POYr6bgcFoKBPs8EOQ47o6u0EhLL0k_e5ij4edzo7kic46MPEbs1NdtSKOoxNQkNIiudSqfbo9leX8n6SlLXtBS1JFwFEsWDqUqEm7rCbBPeW2PNM9IcI52NQ2tol.snhB0UR2zeuzK6._3Ql2n8VqpkdgYobtFmZ2WT5ZAC4kkxpCUK7JIpYNkUecmNEAHw8UdvX.erxOXQGSUKMfioTE35BenBcHzrLarWLxtgqLbE__tkybbcdnVv78qht3HUfpzbj34icbTp36Wk9o1Mr4ZwnslOztuaXSGtFr4Qt573owHziHiA8SShjQQWp_rxtbN6k8C6dlswjsdn5Miujj6D25L2v9WzKhxAE7p.AO14rzSzJPr_DBlZAYUffOz8v16BBLvRvzYZwAT9Zmjh4Yszgy70H3XOSP2f0_Se5Y_p.cj_ldKUJus8FfWGQeSKk6qkKqI88.LrH0f_bWHBRN9aEUUJVz_B1r4AWkZaDSsQP7g8o1KQ9zy02.X4c1xS..2FTPiMLEwZctM4SecY1S9ABioxPNbjvpmT47e.jWVedeXmrtxab_p291i2GgPypxrhOW2Nr87D1gTn7tcvYwYn0y5ZKFhBgLkzcge8p8Xr.6ZoZz0s0l0rsdkhviizuNuby8AqNdIz.KVC5.mbVYnlszwSL4rd194ii_ETFHWf6jOvuvpdM.TOMP5xD8vWM1CMlyy5mHPAwbnAcySrulVvM2JSNXI3WYCdbUaRsufo8B57l9qQYR9PNE4sd_fBL3ztJ5sNjTUy0rKOwYIyyunA4iUZ4GLk5bRMzyzAhoLf.1F4_cFqIvjxCVwoATwTXiKHp8X2.asxYNKDIYfzR0vG3cBtIoZcIrmYuDX1wE8lvAfcZiO1qHsfeLrZCHkbjfwDP3rcArbZBXATZ6stlS6MAVXLHUtM78em0CN9o30iW2BJOgNN1nQSd1wTWWQLIJcCvVapRxVD7O5.U4Nb9DQ95eMC4PYrftQsimjFthRpi1koY7cxacT.VSGxj774rwD4e8DAZRyKQ9P0jkvsBGx9Z1pvO8jBob91N1rAaHAUe0obdJlzAHB.TVFg_sTjoF8cJobeS2Ul6g1s3wI7YAVfHfRfwjZ2poKzyFwGyqfsSr.RHZph8xqdeT5KmFU5kULNmQ1V.VHwmwoY.UJAnULx0F4uiK1i6E9cpDFw7D3HkGi3owCGZSLkOEXAyZecLtKjdp4n5HbxpmXsTdAu1s7FeQnXfgkCdNKN6ecM04X0kKEJwTU5d7QlsKScrsE4aZZmVflESq7Q0OmzMwT4BMhJ2pu7sqPGwXTqegzJrNJCo9urPjQkk.qZCgaLUUWi16_KqTDfp0Ozx37WVlTakmOQnRg4c1f4nkc_.Rm.kbf.F5mkIHKojX5ITDTbe.V6jercsPYqUteKR5Amqkh28256Pt3shRlMUSNYvM3Gds6d6wI7kmaz64kycL.izgGAoxQEetBS6x.kBYhmiixJ7K6XNen8z6hpXXK_1uITGl60_dE.FgcoT3TNrOp9azVfhHqtc6qTxl6uqKhoqeU.ufVXBLq8PkFPrwYPTANHc6tQb4S9R1pxOQavMzgKdbQcDuKG88U1h88TOfhFzpjhJAWwnGgCOEmnpXkaSJhdnf2uPcdONsGKjCXhcwApT17eQ",mdrd: "rHneF7.gKY7oOKUMdw5cTKM.RokjcrnyI0BpskDAPQc-1739232537-1.2.1.1-5HRGi1iN1qgSrQeAywWqstFOLL2QP_cm0J7Bc5xi4x546aC.mLX8BGlRH300UuH3R46LYsX2Pnu_fhz6beAbohiYXzNq8PhoQIcYWa.Rm6UyI5oBO.E4qoVImY3.Qd0Qs8SVeS7IZyjc2IpFBZCPfIOTB60hmxNnnTz9Ty0Mc.PPrOa1KaqE7DYWXk4XvrOyBG.ObWNMBjAzzzxNGgplly5NrJiB8.Shaqqms1NXmomH9m8o8pByTA35lce2E8NXSoSWnlQMxOjssKhne4d9iIxstfekhz7hGjNTpn5ksYmZX2dFUqv61Aj8DSWHsu3DAYhpRbM.pPD0OyXu3IlpA_Qdvj9E5v6ayLBNMNopyo8MKGgKwtvdk_a6s6XUMckdMWSPcIw_EC5OulqMBboAkQzmlYxxNpOj2vGOykG3Sbm3RcT5095L06Qw6gt5NqpT0OzeZ9SY_EEAlOfQGaPzG.VwEyv3R6.CuDWbPxts8dQaJVrPPAds.yRwBuTwXQDCbXNDOAXgNUrL.p9usAYKzVubkMtpk89OweDw9LJ_kaHQo0jz7d1TayL0iNpYpcPsweL4jr..sjJvMwBGGwtxTAZdzFp3Hr8FOSXnP2HuY.V58MufK8F8P0is3NE6OzQcICIkY5z_cTxmx4Y9ngh4b1JrIBL9md4T8ojBtgZxTeM48vcGFR5U_8M6WWsuDZz6spl6gqPt2K4E4vD3JzSqdB24dWI39vNypNobnkTjX0EmeniRhNJcwXiPPn6H_EHbkwSRDgQ17uu4ojsG.BP.qbREWbMuUHLP48JpG_4OXquVPkjBkdlLtx.hnf78ob.Og_vJs9cXK0wbGO88YM29mSEmBhHxcDXCE1YDzRYmD2eohcauLC.q23wixNg1Hb79yc3UQt6HqJIXQ4FWvG7XfP5YEJsQFdHmbAf59jkjUYexbDmV4KbRPtfshfXAVUV3XVOGSX7etqokvnGhznGI8khK7.iLL_x9uYrp9_rGjwvaannBKiaS54rr4_XqUKfi57u9lmJoSmqF7K7RB91AmC7Vc.SJ7.wKlo0sZmKXJ216zdysLOfa1Ofoj85zRPJ6cLoE4YeQdfDEdRbBa_m4.S5DQthMF0bjh6.CzJ9drMvrF2MvdFcGVsS1VU0s71T0Qv.CDIyUZ2wghEd9xjH5J7Knx5c4rt9lB1V1RAWCwKjeLQt_fhxeONYysqF2LMDGqjtYgmQrvR4gE14ReDcHFRv7xgtr64obMmjmP4rS5PnIlR54N2twtGmXQ3g__oZd6mslXJFzVNDGbsmko5HBNJrUFC1sqJ0YOE2CiYx7b49U945_Ck5yaDl8NDhSrhQXP.yYtzR3Cg9gL.If2ATE2sQ4SR.WY.rhR5Uwne7Z4mkmhr_jSxFDvx3BXpo9kGtvsVp34RynLXlCGREgdnuN5r97c1.TksZUQ33dvnWbehsHi1OkoN5K6QBjTidNihCoKDkUeMkFYv_phc7_Uscls9bskFUb46bLST7ebhu6H4G7v6oBjyyfiknJ_Su1ZcfTP.SiAfUhv_0TQL21zfZ1CqW7k4ZRwNT3iYX_5JbQ2UFHbM.ybyz9U2sAOHVYQgurmE82co8pGgLgKztfSlA9czEAGEc_Xo3IPxaJllRUx2Gj9b0Jtm_0.X7goZS31FzZaT6Iv2eGbnmj3cdFav23mI.rUtK0tzFMpQu0D5qleKSRuxeFOJ3Zn7.7oXWC26yedwo.81KqRww2qG05SUAJYJiHRegJaLgcT.5Z74ckfpaAZk1uI704ua_tCcx8dtOG4mQV_C8jSpiCasK3OBo8vxRLxbrAV3Vomj.HOX6HwVuyPjmjgDAbvgnrm1e1yp1o"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=91001b7c9c1dff1b';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\/7810935246?__cf_chl_rt_tk=bFZNRnCss5jb.5diVKmFH.TiGMjiSpV2QChCk7ev8Yk-1739232537-1.0.1.1-M_hB5NF_CU1yE.ciTR.kBxnlMuQDu4kt0NUGRFxKRHw" + 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