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-4853701926-gov.caltech-edu.pp.ua/post/760703366930

  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-4853701926-gov.caltech-edu.pp.ua",cType: 'managed',cRay: '90fdeb5c297ac54e',cH: 'kV3g9anA2rbwm7HsDYOlbu4Cd6gVBNBr0VHqRn_v2Ug-1739209594-1.2.1.1-Ap0OEbjPooIIGffW.VEPIgkbOfaCrGHW7W36pW2wvQaFiOMhDI7TEBdiYR8AnV8D',cUPMDTk: "\/post\/760703366930?__cf_chl_tk=7ovFJIaOVap1nd1iGClxfjsSB2lbc87TWjzsf_yWtH8-1739209594-1.0.1.1-FSN86JDzCQ5nnMEeJFNKyyIO8tXdenjwFygl7ORxx.c",cFPWv: 'g',cITimeS: '1739209594',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/760703366930?__cf_chl_f_tk=7ovFJIaOVap1nd1iGClxfjsSB2lbc87TWjzsf_yWtH8-1739209594-1.0.1.1-FSN86JDzCQ5nnMEeJFNKyyIO8tXdenjwFygl7ORxx.c",md: "z0dceWqr.x_TRRgQ9lROcGnbA3nFP8a5X_ju_76.NIc-1739209594-1.2.1.1-diE7XaTS0BzirawtOwgO_22o6uhUrRqfy7OCwbgo65GMhW5P7ev9aU5ix03Sd51QupWoWEG7KN.z0EBzH17AFQDUIgqTajoMigzQ.teTXibHJYGB7d3UqLPlXUXYGb0zy.s94cqFYhL2BAFo_DKctkiYBxmYM26nfe6VaZs_GQMz9B01jSDpF5h_tia2oXh9jvKnZ.UT3XAyIvshURf2shNxlTVLhGpOBlhhh_7NqT4X.62VU8eYAvmTEeiX_AB9OvIUqPQr6Il6J0Oon3rPhEGMOPP9jeqwD0kXEOUlKE_9VgGOA4n701WRSHq2HlVf9nCO0getwkDeC5LmTAkslHrE5oYzaZTz76ZkAbNC3AZGUlGi6uzF0TzR4CIFqPb1_0mt11F9cmpFsmU3_ecrVehA.wtDNvge.mVn0OuRqYFGxnEhSF9nVFYJFp10e27Bdy9wJjzM7JqD0EL4MR2xnsTsovhBzB3WK0z2H8YX_sZQqKF3wRix_516wDXFYILD19Zi_xCiDkK2Xjy.09phIeXyZzIamO9M5bzoW8Wk8lO34B38TTw6Wv768wUn_bnmzW6n72UvyMR_J4sxK6AIEGpY2cydEglHv24mn0CG4JGAsIHlNKEIgblvvlSdOVWh8YMHlFHDw93scJuFgrsVNx.kBAmg50CyVaDGF_y2XN5TK4FiOkjy4kSYtJsy6Q4izTy_qrWOJXfVtx4rhil.FnXuRLERe.rRkaEtH8cPDZ0Na8pcupzVPaEnS7sxWpgTQz6oqnH416Vs2347r4JBvZPG2oIVuUnpl7QIVn18U1zA9UBA_UboT5u5buPUSSrxTDQgPzU2I_zyOT2eJeHW6xrNm7YyjUdK5w_5Hdrv3xxdGhQNECFXDIPZ3nzrTfUVc0gE2Rx04FZNgHbZdyWHQUaislKyOU.Wz6CvoZN7U9aRttGCPDwFe2uIH4N5bpEUx9tGRka5At1KD0nuDuPHbq.e47hyCe44K3mUNJiP2o1rYJ1OKhjGpRqiGXcaDnMJ3HLLz3pmxkQl5omzxDq3y3kNUUVTmwkh5EHYlD5vtm8.EOKs4dnpHByOFS6JqjfaoqWgvhxvs87QmcC3sw4S7r_rf5f5Qi5saT3VjXVQ1EOQ0czzEDM1jG3.RNc3fj7rWlx6_hEkYiV5aTKWAbO9jtnQvfEVdrTTIvzujPDQkKnIh3lyuvGE_6fpOzD5rlCamg1jQGV5NskZXNNO3hgCyEy8YK_X6YL4gmn7x9vjdar5J4_NM3Ndg1Rv0njpKmd1QUZgY3.bz8Og8A8wje7XQVbwZHN1ZJ8Qd6ZNOrpm_pu9tNQLuwv1VtC55RM1mydBl5ymKJfU.kjP2F1Je1xmue6bZdTZdqkHq4uVg_m4RVZhFcaj1qYihaBOC1cLjM0e4Z44L0N4X6OIqfDHIL06Ch.ngFKGT19_F3PCCrdna1BAtYW5l_eUgmPf2QbBGcK5h_tics0hKaCDL0lMpXZAfhZrA0KkWXaFmF_h7kdAVkhmh_y9ve8d7YXAv..DSDbSdEcfO53KPiabpaoSUbVorPQnjU66S4idTuqxNWFmAU3afHv3JWjnsUdiqNRRA.pmPU4dAOllGKDZjxVMB4M_fpB31AzcMru9mAfsfZoOyL6dl3ZUjvKslt8K6cdXennLZkOmDRfxd1REPHD_fk1oQqJ7FXrtFzpPXrx70s_qkkOT3kPCG48fRglJbGiwJFwlb06q.T.vMOnzYl8oBC4Y_tCfa17CVlWGpEO41XzwESrm1IZQyVU58ycv5oaJY7mSjYKJbq9GHHYkQ3B0KTcWdqjJ37fF7KxwXwmHmKiYN77yRU3_B53H61mTY0X0hvCgw1hnGCBbHtoqDlrUVoysLkdCuXAaViE5DV.zA0SwxQACTykz9AlpBvZQwee7mS.ytDQCZOVglymUBPHyxcaRpSyyvsNOtY_FQ2IhGZ8Wxamfnq_vHqY.GSZyx4wEhQ.A5Oqoht1Wr4FtRBQrUlcggkRXpduqApzWF2HOMN8Lj1510k04Jlv_gZ5QN1lc3aZv3k1wk_IYUKICdTh4u9zDZO8Ujvyb93DAKaUYh_SzF8AusUS5nvC_mn797Va85MDdaRDcE1EnwURozPitClmUKE39VG1CmhQFZ8KF8oXIxCS_uc_MxfDEP06QDshDyNgvr.gcQ7VBXCey0CPBktfcJ8Z_FvXv0imoEJ9Gm4igW5n5n9L0ON4AOj3LlFJXbvBX7ib_yfXHnDldB7jHDEUPHQ",mdrd: "BFrPnEaoXh6QZkVlnUVEmWFg0GfiJOP2DXyF0Digw8o-1739209594-1.2.1.1-yw61y3BofX3BdbjyBNhCSqB_WFKBrF3aNIH8ZsC8lvTVJpCbbpuQI3AU4eHIBdICZZDL.bQJxqU5imI9Q7oB6UznT7Ysd.M1ovoGX1rFKiDgEHcViDCD5sG50PVx9fhFO73zUPihirDB87iNlIGaGTVDAlQg1vGagsi_rybFuOVzLaiVr_a2XS0xktX40ZjL5md997AoVNyDO8rlwzKgSlsDxznkH7W2o8_NLIsvbxHfrsnO78nM.HvIixyMcLYvaOCizopbnKm5czbzEHI4OoiGBa26Tiij4r22mj230ELECn_7Vk3Fv6O.kiZmJQkukRTeROQLV5G8FWKzwAWn1DHdMVSlluuvxdze.j5zBVuJw6Q7LbN8O_ki7nha_WRkRUNndX0ZICm7XJYBmljTPNkU5fcx4FupahVk6Lnn2b6TLIvph5S0o2NCwYjcDU_x42AF3opaI8NQRx3kw6KKn3Lm8XDYYHCD54x7aH1rm4aKY0MMDh7zqCJYY7M46nOiFqPN0hh.C_61ntKSyry02nQxF.c3WohJ1xxVv5FDPyJrVL72_sePHozE6ZCT4m0jGEz0vI0ufo_EUQiJ1P.t7sGAiEVTDrD01W8.NI51v6DqyZ0DwetikHwDYjjgxCMklHWqiFitBM2FAi31ZJVZa8IDS6V1W2.jGbTaWXsLzfSVYo9ZprpldS2Wx_hUezLP1Z3HfO_kESW84HrkH_BmoVO2DGW8YnwMvCD.ZPh4hAJgUHyU2i0M1cLdOsJguR_4UEKkPJk3b_m7VuAgnDsQ_lzYAEPPiY86cLECZo66UTsSZbMuNvhfd6kTsKmXGRDPFCzUzRDaCvTOA6rV2Od48mqMoZuji4929O2ivblK_1tS8KHCoNMxeDb9RVpzsBZVOCKUB_9WSdflbCfkt4XdxXJ4jzPX_jf65lAzlCYD3o7ZBnSWmvqw8tJFyKpbOAeLcIByZIiPVCJKaes.V0tWQpIC5EaIERF9grk8JER7BjjP_ueq1G2e7pCPqHaT.GfOEbjOdVnox5np8.GevN1gAFTmWpo8tUpUTsObmk1YU7C6cMAF1W3ZcWA2PzeoeFPgaQivOzVUd4rSKItIYlZwE6Rj._zqng.8270Gll8LHPnO30Eyun0XzBZV8_TtyN1FqX09EWXGoZ89EkNnVDOUmr7REst_SgLv5_BuXri2HY.jfGTRVuhwz3b_sgzmz3BQzNdG8iU4fIt4Xt1tJTnB1B9nRYPKXSni_iz2DTW6LotDoHOWozn3oQ7yoo37ufRDRPz8I9R2hTN1tflQIZa9h3ZSxnAfip_aStKRdk2vCb9TqRv4hsp4cHUDhAxPZLJprB9xDZUTc4BAiXMLAaTvF7QaYFlIH5pHiFFVsje1cOTEgedxIWIOXarAwjhp7jJ5NGsEgoYf8eeU.1IC6EmAiKudHVVgapZVxnGMFENBLJEFB1ain0APCBQ8dC0xYA4b_bOhmbckwR4GPNRmhVpt7qeFtYRe_9Ze7JoRLryLPPmG1_SI2Z19u4nkfdfCYKJBWJEPuzsx.dgNwAps2uaAK8kZaQWUOTspCv7YNXLgejaq5h13qwk_jmC3H74105bLFIzD.ZkNzoBFN006hEVtZlbIWmxzb2GgGEJSpXLQZoP9BLIa40F4VlMhjfed0.t6F5cdLKFpbbiceXYhayBXOZ3WpK1CNX_wbR.uhRD5J4qO5wg0vHd5p1h366X7uLqKtOAwocJzvQFnCcx2Z5qdrMNxuCpmcQ6podJKU0o6VzOvDL9RaItQJSI_3Drp9YrwKTBr.CR4ixI_rDIJ7TgVRcSMXJlwSi.9NYkgAha2NSstGNEKjjRwyHFPRoGlVva4Z7M3HidcjKZLQICd0BUVKA"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=90fdeb5c297ac54e';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\/760703366930?__cf_chl_rt_tk=7ovFJIaOVap1nd1iGClxfjsSB2lbc87TWjzsf_yWtH8-1739209594-1.0.1.1-FSN86JDzCQ5nnMEeJFNKyyIO8tXdenjwFygl7ORxx.c" + 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