Supernova Ring in Satellite Galaxy of Milky Way

A NASA/ESA Hubble Space Telescope image of a gaseous ring surrounding the supernova 1987A, which exploded on February 23, 1987 in the Large Magellanic Cloud, an irregular satellite galaxy of the Milky Way. The image, taken with the European Space Agency’s Faint Object Camera (FOC), reveals clumpy structure in the ring which indicates that the material is not uniformly distributed.

Source: The Daily Galaxy