SOLAR SYSTEM

UNIVERSE

SURVEY OF THE PLANETS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which was the last part of the planet-forming process?
A
Formation of the atmosphere of the planets.
B
Formation of the planets’ core
C
Formation of the planetesimals
D
Formation of the Sun
Explanation: 

Detailed explanation-1: -The standard scenario of terrestrial planet formation consists of three stages: (1) dust to planetesimals, (2) planetesimals to protoplanets, and (3) protoplanets to planets.

Detailed explanation-2: -The Sun and the planets formed together, 4.6 billion years ago, from a cloud of gas and dust called the solar nebula. 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.

Detailed explanation-3: -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.

Detailed explanation-4: -Planet formation is the process of forming a planet. It includes the gravitational collapse of a planetesimal into a protoplanet, the accretion of materials onto this protoplanet, and the planetary accretion that follows.

There is 1 question to complete.