GENERAL KNOWLEDGE

Detailed explanation-1: -As the nebula collapsed under its own gravity, it spun faster and flattened into a disk. Most of the nebula’s material was pulled toward the center to form our Sun, which accounts for 99.8% of our solar system’s mass. Much of the remaining material formed the planets and other objects that now orbit the Sun.

Detailed explanation-2: -The core extends from the sun’s center to about a quarter of the way to its surface. Although it only makes up roughly 2% of the sun’s volume, it is almost 15 times the density of lead and holds nearly half of the sun’s mass.