Supernovae also influence the structure of galaxies. The shockwaves from these explosions can set off the formation of recent stars by compressing the fuel and mud in bordering areas. [201] The bulk of the material ejected by Variety II supernovae is hydrogen and helium.[202] The weighty elements are produced by: https://ricardoxbnpk.dgbloggers.com/36285724/the-best-side-of-ivey-case-study-assignment-help