SOLAR SYSTEM

Detailed explanation-1: -Our Sun is a relatively dirty, Type I star – which is probably a very, very good thing, because otherwise there might not have been enough “dirt” floating around the early solar system to form the Earth!

Detailed explanation-2: -A star is any massive self-luminous celestial body of gas that shines by radiation derived from its internal energy sources. Of the tens of billions of trillions of stars in the observable universe, only a very small percentage are visible to the naked eye.

Detailed explanation-3: -Stars are huge celestial bodies made mostly of hydrogen and helium that produce light and heat from the churning nuclear forges inside their cores. Aside from our sun, the dots of light we see in the sky are all light-years from Earth.