SOLAR SYSTEM

Detailed explanation-1: -The density as a function of distance to the Sun, in the isothermal model with √ v 2 = 270 km/s, if the Sun were not moving with respect to the halo (v ⊙ = 0). The increase in density at small r, compared to d ∞, is the effect of the Sun’s gravity. At the Earth’s distance the increase is approximately 3%.

Detailed explanation-2: -As you can see, the densities of the Solar planets varies widely. Whereas those that are closer to the Sun are terrestrial and quite dense, those that inhabit the outer Solar System are largely gaseous and liquid, and are therefore less dense on average.

Detailed explanation-3: -A planet’s orbital speed changes, depending on how far it is from the Sun. The closer a planet is to the Sun, the stronger the Sun’s gravitational pull on it, and the faster the planet moves. The farther it is from the Sun, the weaker the Sun’s gravitational pull, and the slower it moves in its orbit.

Detailed explanation-4: -An accurate portrayal of the Solar System shows that the orbits of the planets are spaced further apart as distance from the Sun increases. For example, the orbits of Saturn and Neptune are further apart than the Earth and Venus.

Detailed explanation-5: -size of the planets decreases gradually. planets very close to the sun are made up of gases and liquids and the planets far away from the sun are made up of rocks. time taken by planets to complete one orbit around the sun increases.