SOLAR SYSTEM

Detailed explanation-1: -Eventually, the pressure in the core was so great that hydrogen atoms began to combine and form helium, releasing a tremendous amount of energy. With that, our Sun was born, and it eventually amassed more than 99% of the available matter. Matter farther out in the disk was also clumping together.

Detailed explanation-2: -By far most of the solar system’s mass is in the Sun itself: somewhere between 99.8 and 99.9 percent. The rest is split between the planets and their satellites, and the comets and asteroids and the dust and gas surrounding our star.

Detailed explanation-3: -Starting point: A cloud of interstellar gas and dust, the “solar nebula"; Most of it (98%) is hydrogen and helium, but it includes atoms and dust grains of heavier material, formed in previous generations of stars.

Detailed explanation-4: -The sun’s mass is more than 333, 000 times that of Earth, and contains about 99.8 percent of all of the mass in the entire solar system! The sun is made up of a blazing combination of gases.

Detailed explanation-5: -About 2% of our solar nebula consisted of elements besides hydrogen and helium. However, the first generation of star systems in the universe probably consisted only of hydrogen and helium.