title: After the supernova, what?
authors: Harvard College Observatory, Cambridge, MA 02138, USA.
authors: J C
authors: JC
authors: Wheeler
mesh_terms: D001256:Astronomy / Q000379:methods*; D002244:Carbon / Q000737:chemistry; D003359:Cosmic Radiation; D005118:Extraterrestrial Environment; D007501:Iron / Q000737:chemistry; D008027:Light; D010825:Physics / Q000379:methods; D014965:X-Rays
chemical_list: D002244:Carbon; D007501:Iron