Ok, hydrogen is the simplest and most abundant atom in the universe. And I read that atoms are contantly trying to turn into a more stable being, where iron atoms are the most stable. Stars fuse hydrogen for energy, and when the hydrogen runs out, the stars life is over. So I have two questions. 1. Do the heavier elements formed in stars get blasted into space when stars go supernova? 2. It seems that the universe would eventually run out of hydrogen, so is there something or some process in the universe by which more hydrogen is created? This is my first post and I look forward to great discussions with everyone.