🌌 Cosmic Microwave Background: 2D Map and Power Spectrum

Interactive 2D flat-sky map of the cosmic microwave background with its acoustic-peak power spectrum: change the curvature, baryon and matter density, spectral tilt and Silk damping, watch the plasma sound waves ring until recombination, drag a ring of sound-horizon size over hot spots and drag across the spectrum to band-pass the map by multipole.

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