Cassiopeia A, Inner Layers, Illustration

2012 21st century art artist concept astronomy burst of radiation cas a cassiopeia a cassiopeia constellation cassiopeia celestial body concept deep sky deep space diagram distribution map element map epromo space illustration 12 11 2019 exploding star illustration inner layers iron distribution magnesium distribution neon distribution oxygen distribution science silicon distribution sn snr space art stellar explosion sulfur distribution supernova remnant supernova