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  <!-- Evidence source topics: Hubble tension; JWST early galaxies; SPARC rotation curves; El Gordo; Lithium-7; Proca photon mass bounds; tired light criticism and constraints; dark matter and alternative propulsion concepts. -->
  <url>
    <loc>https://arcsecs.com/</loc>
    <lastmod>2026-05-31</lastmod>
    <changefreq>weekly</changefreq>
    <priority>1.0</priority>
    <image:image>
      <image:loc>https://arcsecs.com/wp-content/themes/arcsecs-v5/assets/images/Cosmic_vortex_and_radiant_beams.png</image:loc>
      <image:title>ArcSecs Home</image:title>
      <image:caption>ArcSecs explores speculative cosmology, tired light, massive photon ideas, dark-sector models, Distance-Time Framework research, propulsion thought experiments, and test-driven physics simulations.</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://arcsecs.com/arcsecs-research-hub/</loc>
    <lastmod>2026-05-31</lastmod>
    <changefreq>weekly</changefreq>
    <priority>1.0</priority>
    <image:image>
      <image:loc>https://arcsecs.com/wp-content/themes/arcsecs-v5/assets/images/Cosmic_vortex_and_radiant_beams.png</image:loc>
      <image:title>ArcSecs Research Hub</image:title>
      <image:caption>Start here for ArcSecs speculative cosmology, the Distance-Time Framework, framework comparison, cosmic anomalies, Physics Engine demos, propulsion concepts, and AI-readable project memory.</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://arcsecs.com/research-library/</loc>
    <lastmod>2026-05-31</lastmod>
    <changefreq>weekly</changefreq>
    <priority>0.94</priority>
    <image:image>
      <image:loc>https://arcsecs.com/wp-content/themes/arcsecs-v5/assets/images/Cosmic_vortex_and_radiant_beams.png</image:loc>
      <image:title>ArcSecs Research Library</image:title>
      <image:caption>Browse ArcSecs source links grouped by Hubble tension, JWST early galaxies, SPARC rotation curves, El Gordo, Lithium-7, Proca photon bounds, tired-light constraints, and propulsion analogies.</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://arcsecs.com/arcsecs-distance-time-framework/</loc>
    <lastmod>2026-05-31</lastmod>
    <changefreq>weekly</changefreq>
    <priority>0.98</priority>
    <image:image>
      <image:loc>https://arcsecs.com/wp-content/themes/arcsecs-v5/assets/images/Cosmic_vortex_and_radiant_beams.png</image:loc>
      <image:title>ArcSecs Distance-Time Framework</image:title>
      <image:caption>ArcSecs explains a speculative Distance-Time Framework for measuring cosmic distance without lightyears and modeling universal progression without local clocks, using parallax, parsecs, gravity-wave baselines, relational time, and multi-messenger tests.</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://arcsecs.com/multi-messenger-light-delay/</loc>
    <lastmod>2026-05-31</lastmod>
    <changefreq>weekly</changefreq>
    <priority>0.94</priority>
    <image:image>
      <image:loc>https://arcsecs.com/wp-content/themes/arcsecs-v5/assets/images/light-slowing-energy-degeneration-diagram.png</image:loc>
      <image:title>Multi-Messenger Light Delay</image:title>
      <image:caption>Explore GW170817, GW150914, and GW190521 timing as a speculative ArcSecs test page separating gravitational-wave baselines, electromagnetic source delay, environmental diffusion, tired-light energy accounting, and possible light-slowing propagation effects.</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://arcsecs.com/arcsecs-physics-engine-demo/</loc>
    <lastmod>2026-05-31</lastmod>
    <changefreq>weekly</changefreq>
    <priority>1.0</priority>
    <image:image>
      <image:loc>https://arcsecs.com/wp-content/themes/arcsecs-v5/assets/images/Cosmic_vortex_and_radiant_beams.png</image:loc>
      <image:title>ArcSecs Physics Engine Demo</image:title>
      <image:caption>Interactive ArcSecs speculative physics visualization for relational flat-space modeling, tired light, massive photons, diagnostics, and Dark Matter Drive simulation context.</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://arcsecs.com/dark-matter-drive-simulator/</loc>
    <lastmod>2026-05-31</lastmod>
    <changefreq>weekly</changefreq>
    <priority>0.96</priority>
    <image:image>
      <image:loc>https://arcsecs.com/wp-content/themes/arcsecs-v5/assets/images/Cosmic_vortex_and_radiant_beams.png</image:loc>
      <image:title>Dark Matter Drive Simulator</image:title>
      <image:caption>Plugin-owned ArcSecs speculative propulsion sandbox for field capture, shielding, energy ledgers, thermal stress, and deterministic replay experiments.</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://arcsecs.com/space-travel-simulation/</loc>
    <lastmod>2026-05-31</lastmod>
    <changefreq>weekly</changefreq>
    <priority>0.94</priority>
    <image:image>
      <image:loc>https://arcsecs.com/wp-content/themes/arcsecs-v5/assets/images/Cosmic_vortex_and_radiant_beams.png</image:loc>
      <image:title>Space Travel Simulation</image:title>
      <image:caption>ArcSecs speculative research page explaining a space travel simulation through dense-substrate fuel harvesting, void coasting, teleparallel torsion, Proca substrate interaction, Mass-Polariton transfer, EIT capture, route planning, autopilot, and mission objectives.</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://arcsecs.com/standard-cosmology-vs-arcsecs/</loc>
    <lastmod>2026-05-31</lastmod>
    <changefreq>weekly</changefreq>
    <priority>0.95</priority>
    <image:image>
      <image:loc>https://arcsecs.com/wp-content/themes/arcsecs-v5/assets/images/standard-cosmology-vs-arcsecs-comparison.png</image:loc>
      <image:title>Standard Cosmology vs ArcSecs</image:title>
      <image:caption>Compare mainstream Lambda-CDM cosmology with the speculative ArcSecs framework, including spacetime, tired light, photon mass, slow-light dark matter, propulsion concepts, and TypeScript simulation architecture.</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://arcsecs.com/cosmic-anomalies-tracker/</loc>
    <lastmod>2026-05-31</lastmod>
    <changefreq>weekly</changefreq>
    <priority>0.95</priority>
    <image:image>
      <image:loc>https://arcsecs.com/wp-content/themes/arcsecs-v5/assets/images/cosmic-anomalies-tracker-overview.png</image:loc>
      <image:title>Cosmic Anomalies Tracker</image:title>
      <image:caption>Track cosmological anomalies including the Hubble tension, JWST early galaxies, galaxy rotation curves, El Gordo, Lithium-7, tired light, Proca photons, and ArcSecs speculative physics models.</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://arcsecs.com/arcsecs-physics-engine-demo/ai-summary/</loc>
    <lastmod>2026-05-31</lastmod>
    <changefreq>weekly</changefreq>
    <priority>0.9</priority>
  </url>
  <url>
    <loc>https://arcsecs.com/llms.txt</loc>
    <lastmod>2026-05-31</lastmod>
    <changefreq>weekly</changefreq>
    <priority>0.8</priority>
  </url>
  <url>
    <loc>https://arcsecs.com/arcsecs-sitemap.xml</loc>
    <lastmod>2026-05-31</lastmod>
    <changefreq>weekly</changefreq>
    <priority>0.6</priority>
  </url>
</urlset>
