Hear and explore the microwave sky — CMB, tSZ, CIB & kSZ — from the HalfDome simulations.
Turn the CMB, tSZ, CIB and kSZ power spectra into sound. Mix components, choose a survey band, sweep across angular scales and frequencies, play it with instruments, and click an interactive 3D sky to listen to clusters.
Launch →Pan and zoom a full-sky map — longitude wraps, so you can keep scrolling. Switch components and survey bands, see the massive clusters overlaid, and toggle scan-to-listen to sonify the sky under your cursor.
Launch →The same multi-probe sky on a rotatable 3D globe (WebGL). Spin it, zoom in, and click any direction to hear it; the massive clusters glow as points.
Launch →Stand at the centre of the observable universe: galaxy clusters fill the 3D volume by distance, with the CMB as the glowing outer shell. Look around, fly through, and click to listen.
Launch →Things to try inside the Sonifier: 🌟 Big Bang (hear the CMB acoustic peaks), ℓ-Sweep & ν-Sweep, Build-Up (CMB→+tSZ→+CIB), Instruments, Duet (two probes’ cross-correlation as harmony), and stereo & 3D spatial audio. In the Sky Explorer & Globe, try Scan mode and clicking clusters. Headphones recommended.