In order to answer these important and profound questions, they of astronomers put to use the "fossil" records left as relics imprinted by stars from the spectra of remote, dead galaxies--thus providing precious clues concerning their metal content, age, and element abundances. All atomic elements which might be heavier than hydrogen and helium are termed metals inside the jargon of astronomers. Hydrogen (the lightest and quite a few abundant atomic element inside Universe) and helium were both born inside Big Bang fireball (Big Bang nucleosynthesis), while the rest of the, heavier atomic elements listed from the familiar Periodic Table were manufactured inside nuclear-fusing fires from the stars--or, alternatively, within the incandescent explosive rage of the supernovae deaths (stellar nucleosynthesis). szablon allegro fitness