Eric Walker added A Star Went Supernova in 1987. Where Is It Now? - The New York Times to SN 1987A, and added SN 1987A to Type II supernovae and Large Magellanic Cloud

Eric Walker added SN 1987A to Large Magellanic Cloud, and added Large Magellanic Cloud to Galaxies

Eric Walker added a number of topics and a number of links to Galaxies, and added Galaxies to Outer space