Home▸Space & Astronomy▸Expanding Universe from the Friedmann Equations: 2D Slice

🌌 Expanding Universe from the Friedmann Equations: 2D Slice

2D slice of an expanding Friedmann universe with Hubble circle and scale factor graph.

Space & Astronomy2DModerate60 FPS📱 Mobile-adapted⇄ 2D version

Details

CategorySpace & Astronomy

RenderingCanvas 2D

DifficultyModerate

Target FPS60

ControlsSliders for Hubble constant, matter density, dark energy density, radiation density, playback speed, galaxy count and slice thickness; toggles for the Hubble circle and distance rings; click a galaxy to read its distance and recession speed, drag the scale-factor graph to scrub cosmic time, drag to pan and scroll to zoom.

cosmologyFriedmann equationsHubble lawdark energyscale factorexpansion

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⚙ Under the hood

Interactive 2D slice through an expanding universe integrated from the Friedmann equations: galaxies colored by recession speed, a Hubble-sphere circle, distance rings and a draggable a(t) timeline, with presets from LCDM to Big Crunch.

cosmologyFriedmann equationsHubble lawdark energyscale factorexpansion

2D · HTML5 Canvas 2D · 60 FPS target · runs fully client-side, no install