2020Cassiopeia A
Chandra
Exploded stars · 2023
Hard X-rays on the pulsar wind

A second take on the Crab: Chandra’s softer X-rays plus NuSTAR’s harder, higher-energy view of the pulsar wind nebula.
What you’re hearing
Hear Chandra, NuSTAR, or both. The harder X-rays pick out the most energetic particles around the pulsar.
Layers
NASA/CXC/SAO/K. Arcand, SYSTEM Sounds (M. Russo, A. Santaguida)

Perseus Cluster
Black hole waves