Cassiopeia A (Cas A) supernova remnant
Title: Cassiopeia A (Cas A) supernova remnant
"This square is based on an image from NASA’s Chandra X-ray Observatory showing the location of different elements in the remains of the supernova explosion: silicon (red), sulphur (yellow), calcium (green) and iron (purple). The blast wave from the explosion is seen as the blue outer ring."
Maker: Anne Evans, Engineer
Techniques used: Hand embroidery over multicoloured voile