# Cassiopeia A Supernova (B) (2023)

A 3D model from NASA/Salvatore Orlando, [NASA](https://science.nasa.gov/3d-resources/cassiopeia-a-supernova-b-2023/).

- Licence: [Not subject to copyright in the United States (NASA)](https://www.nasa.gov/nasa-brand-center/images-and-media/)
- Credit: NASA/Salvatore Orlando
- Model (GLB): [https://assets.science.nasa.gov/content/dam/science/cds/3d/resources/model/cassiopeia-a-supernova-(b)-(2023)/Cassiopeia%20A%20Supernova%20(B)%20(2023).glb](https://assets.science.nasa.gov/content/dam/science/cds/3d/resources/model/cassiopeia-a-supernova-(b)-(2023)/Cassiopeia%20A%20Supernova%20(B)%20(2023).glb)
- Not offered in your room: its source does not state the model's scale, so it could not be shown at its true size.

Using NASA’s James Webb Space Telescope, astronomers uncovered a mysterious feature within the remnant, nicknamed the “Green Monster,” alongside a puzzling network of ejecta filaments forming a web of oxygen-rich material. When combined with X-rays from Chandra, the data helped astronomers shed light on the origin of the Green Monster and revealed new insights into \[…\]