A supernova remnant called G352.7-0.1 has swept away about 45 times the Sun's mass worth of material during its expansion. This is an unusual occurrence, leading researchers to believe that remnant interacted with a massive amount of dense material. A Chandra X-ray telescope study of the remnant (that is about 24,000 lights years from Earth) was used to make the find. <br /> <br />Credit: NASA/CXC/A. Hobart <br /> <br />http://chandra.harvard.edu/photo/2014/g352/
