2020Pillars of Creation
Chandra · Hubble
Nebulae · 2021
NGC 6543

A sun-like star in its last act, blowing off shells of gas. Hubble shows the sculpted visible nebula; Chandra catches hotter X-ray gas trapped inside.
What you’re hearing
Visible light and X-rays are two instruments. The nested shells create repeating figures as the scan crosses the eye.
Layers
NASA/CXC/SAO/K. Arcand, SYSTEM Sounds (M. Russo, A. Santaguida)

Perseus Cluster
Black hole waves