Craig Heinke Nature Paper:

Please select the image to view full size...

The supernova remnant Cassiopeia A. The blue dot in the centre of the image is identified as a young neutron star. (NASA/CXC/Southampton/W. Ho) Image credit: NASA/CXC/SAO; Optical: NASA/STScI; Infrared: NASA/JPL-Caltech/O. Krause