Tech Facts

We’ve learned about what happened for thefirst billion years or so in the history of the universe, which leaves us with lots ofstars and galaxies, and we are now equipped with the terminology needed to describe andcategorize these stars. But we still haven’t talked about all theother elements on the periodic table, we’ve only mentioned hydrogen and helium so far,so where did the rest come from? And what about all the planets and moons? How did those get here? The answer to all of these questions willmake sense once we learn more about what goes on inside a star, from the moment they areborn, to the time of their death.              That’s right, stars actually die, so to speak, and the type of death, along with what’s left over, will be one of a variety of possibilities,depending entirely on the mass of the star. So let’s go through the lifetime of a few different kinds of stars, so that we are ready to understand the next 13 billion years ofdevel...