Answers: Usually what happens is a roomy event such as a supernova will destroy an frail star, kicking out elements. Here's how it's believed to have happen before this solar system be formed, since it's believed that the sun is only a 500 million years elder than the planets:
When a star is about to die, its closing stages of life consume closely of different materials (this is assuming this star is large satisfactory to create a supernova). When it runs out of hydrogen, it begins to fuse helium, when that runs out, it go to lithium, then on down the broken up table, until iron, which requires too much energy to fuse, and the fusion inwardly the star ceases. What happen here is tight . . . lets establish this first:
Stars are composed of mostly hydrogen and helium, little bit of lithium, and much much smaller quantity of the heavier elements . . .
When the iron is left to fuse and it can't be done, the internal pressure from the core, which is generate by fusion, is lost, and the top shell of the sun is left to be supported but, since the fusion pressure have ceased, there's nil to keep it up, and the outer shell of the star collapses. This massive collapse of adjectives that material to the spare core compresses the inward falling material, increasing pressure and when that bits and pieces hits the inner core, it 'bounces' back out brutally, releasing massive amounts of energy, shooting the entire outer portion of the star into space. This is the moment within which heavy elements are made, contained by supernova events. The universe at one point did not have much by process of heavy elements, but as more and more stars collapse and supernova, they create more and more heavier elements; the birth of the diversity of the periodic table is here.
From this you could assume, that as the universe get older, stars are going to be creating and spitting out more and more cumbersome elements, and since stars cannot really use heavier elements to fuse, the number of stars over billions of years will slowly start to decline.
i don't fully understand your cross-question but i know there are super starchy elements in different star systems.
More Solar Questions & Answers...
