A combination of X-ray from NASA's Chandra observatory and radio data indicates that a galactic "fracture" was likely caused by a special neutron star called a pulsar.

NASA diagnoses fracture in a 'huge cosmic bone' using X-ray observatory

Source: space
Source Link: https://www.space.com/astronomy/galaxies/nasa-diagnoses-fracture-in-a-huge-cosmic-bone-using-x-ray-observatory