Our sun is the central point around which the entire planet and solar system is built. Without it all life on our planet would cease to exist. In this article we will explore how our Sun and solar system formed and came to resemble what we see today. The Big Bang, the alpha of existence for the building blocks of stars, occurred approximately fourteen billion years ago. The elements produced by the big bang consisted of hydrogen and helium with traces of lithium. Hydrogen and helium are the essential structure that builds stars. Inside these early stars, heavier elements slowly formed through a process known as nucleosynthesis. Nucleosynthesis is the process of creating new atomic nuclei from pre-existing nucleons. As stars eject their contents, whether in supernovas, solar winds, or solar explosions, these heavier elements along with other “stellar stuff” are ejected into the interstellar medium where they will later be recycled into another star. This physical process of galactic recycling is how the mass of the solar system came to contain 2% of these heavier elements. Our solar system, as we see it today, originally formed from the collapse of a very cold, low-density gas cloud. The mass of this cloud was 98% hydrogen and helium, 1.4% hydrogen compounds, 0.4% rock, and 0.2% metals. The nebula was thought to be a few light-years in diameter and roughly spherical in shape. The cloud was in a state of equilibrium, neither contracting nor expanding, until a catastrophic event, most likely a supernova, created a shock wave through the nebula, resulting in an area of ​​increased mass. Once this area becomes more massive than the rest of the nebula, it begins to collapse with the area of ​​high... middle of paper... planetesimals that once orbited the Sun but were, at some point, captured . in a planetary orbit thanks to the planet's gravity. The crater is also a sign of this period, and the explanation is the collision of planetesimals with larger planetesimals. Overall we can get a pretty clear view of how the Solar System formed, yes, there are still some aspects that are difficult to realize. sense, as well as debates over which theory is correct, such as core accretion or disc instability, but overall I think it's quite surprising what we've learned about the nature of the system and I look forward to future discoveries. Works Cited http://en.wikipedia.org/wiki/Kuiper_belthttp://en.wikipedia.org/wiki/Gas_gianthttp://en.wikipedia.org/wiki/Nucleosintesihttp://en.wikipedia.org/wiki/ Formation_and_evolution_of_the_Solar_System