INSUBCONTINENT EXCLUSIVE:
well-known supernova remnant Cassiopeia A (Cas A)
resemblance to the wall in the left field of Fenway Park.Image Credit: X-ray: NASA/CXC/SAO; Optical: NASA/ESA/STScl; IR:
NASA/ESA/CSA/STScl/Milisavljevic et al., NASA/JPL/CalTech; Image Processing: NASA/CXC/SAO/J
