SOLAR SYSTEM

Detailed explanation-1: -Approximately 4.6 billion years ago, the solar system was a cloud of dust and gas known as a solar nebula. Gravity collapsed the material in on itself as it began to spin, forming the sun in the center of the nebula. With the rise of the sun, the remaining material began to clump together.

Detailed explanation-2: -The nebular hypothesis is the idea that a spinning cloud of dust made of mostly light elements, called a nebula, flattened into a protoplanetary disk, and became a solar system consisting of a star with orbiting planets [12].

Detailed explanation-3: -Gravity causes the cloud to contract, or get smaller. The cloud spins as it contracts. The cloud becomes more compact and spins faster. The spinning motion causes the cloud to flatten out into a round disk.

Detailed explanation-4: -Four Major Characteristics of the Solar System All planets and most satellites have elliptical, often nearly circular, orbits in nearly the same plane and revolve in the same sense (counterclockwise when looking down on the North Pole). The predictable nature of the orbits is traditionally described by Kepler’s laws.

Detailed explanation-5: -All planets orbit the Sun in the counterclockwise direction (right-hand rule) as seen from above the ecliptic. This is called direct motion. The opposite direction is called retrograde. The Sun also rotates in this same direction.