EVERYDAY SCIENCE

Detailed explanation-1: -The Sun is currently a main sequence star and will remain so for another 4-5 billion years. It will then expand and cool to become a red giant, after which it will shrink and heat up again to become a white dwarf.

Detailed explanation-2: -About 90 percent of the stars in the universe, including the sun, are main sequence stars. These stars can range from about a tenth of the mass of the sun to up to 200 times as massive. Stars start their lives as clouds of dust and gas. Gravity draws these clouds together.

Detailed explanation-3: -Like most stars in our universe, the Sun is on the main sequence stage of its life. This means nuclear fusion reactions in its core fused hydrogen into helium. However, this process cannot last forever since there is a finite amount of hydrogen in the core of the Sun.

Detailed explanation-4: -A nebula. A star forms from massive clouds of dust and gas in space, also known as a nebula. Protostar. As the mass falls together it gets hot. Main sequence star. Red giant star. White dwarf. Supernova. Neutron star or black hole.