SOLAR SYSTEM

Detailed explanation-1: -A shock wave from a nearby supernova explosion probably initiated the collapse of the solar nebula. The Sun formed in the center, and the planets formed in a thin disk orbiting around it. In a similar manner, moons formed orbiting the gas giant planets.

Detailed explanation-2: -Formation. Our solar system formed about 4.5 billion years ago from a dense cloud of interstellar gas and dust. The cloud collapsed, possibly due to the shockwave of a nearby exploding star, called a supernova. When this dust cloud collapsed, it formed a solar nebula – a spinning, swirling disk of material.

Detailed explanation-3: -The nebular hypothesis says that the Solar System formed from the gravitational collapse of a fragment of a giant molecular cloud, most likely at the edge of a Wolf-Rayet bubble. The cloud was about 20 parsecs (65 light years) across, while the fragments were roughly 1 parsec (three and a quarter light-years) across.

Detailed explanation-4: -How would the solar system be different if the solar nebula had cooled with a temperature half its current value? Jovian planets would have formed closer to the Sun.

Detailed explanation-5: -Answer: D-temperature and density Which of the following characteristics of a solar nebula Increases with distance from the Sun?