SOLAR SYSTEM

Detailed explanation-1: -The main sequence phase is the stage in development where the core temperature reaches the point for the fusion to commence. In this process, the protons of hydrogen are converted into atoms of helium.

Detailed explanation-2: -It is now called a main sequence star and will remain in this stage, shining for millions or billions of years to come. As the main sequence star glows, hydrogen in the core is converted into helium by nuclear fusion.

Detailed explanation-3: -Supergiants have the shortest lifespans of any star, as the temperatures in a supergiant’s core get so high that it is able to fuse the helium that is left over after hydrogen burning has stopped. This helium burning process fuses helium atoms into carbon atoms, which then begin to build up at the center of the core.

Detailed explanation-4: -The most massive stars become supergiants when they leave the main sequence and quickly start helium fusion as they become red supergiants. After the helium is exhausted in the core of a star, helium fusion will continue in a shell around the carbon–oxygen core.

Detailed explanation-5: -Over time, the hydrogen gas in the nebula is pulled together by gravity and it begins to spin. As the gas spins faster, it heats up and becomes as a protostar. Eventually the temperature reaches 15, 000, 000 degrees and nuclear fusion occurs in the cloud’s core.

Detailed explanation-6: -The supernova is the final stage in the life of massive stars. The outer region of the star collapses and it Instantly rebounds off the inner core in a cataclysmic explosion. The extremely high level of energy allows further fusion reactions to occur, producing heavy elements like gold, silver and uranium.