How were the planets in the solar system formed?(1 point)
Responses
The dust particles were attracted by gravity from distant galaxies.
The dust particles were attracted by gravity from distant galaxies.
The solid materials were forced out of the sun's disc and cooled down.
The solid materials were forced out of the sun's disc and cooled down.
The remaining materials from the sun's formation clumped together due to gravity.
The remaining materials from the sun's formation clumped together due to gravity.
The gas particles released by the sun were pulled away and became solid.
The gas particles released by the sun were pulled away and became solid.
The correct answer is "The remaining materials from the sun's formation clumped together due to gravity."
The correct answer is: The remaining materials from the sun's formation clumped together due to gravity.
To understand how the planets in the solar system were formed, astronomers have developed a theory called the nebular hypothesis. According to this hypothesis, the solar system originated from a giant cloud of gas and dust known as a nebula.
Here's how the process of planet formation likely occurred:
1. Nebula Formation: A large, diffuse cloud of gas and dust is formed in space. This could happen as a result of the explosion of a previous star, known as a supernova.
2. Nebula Collapse: Due to gravity, the nebula begins to collapse in on itself. Gravity pulls the gas and dust particles towards the center, causing the cloud to shrink.
3. Protostar Formation: As the nebula collapses, it begins to rotate faster and flatten into a spinning disk called a protoplanetary disk. At the center of this disk, a dense region forms known as a protostar, which eventually becomes the Sun.
4. Planetesimal Formation: Within the protoplanetary disk, small clumps of dust and ice begin to stick together. These clumps, called planetesimals, range in size from a few centimeters to several kilometers.
5. Planet Formation: Over time, the planetesimals continue to collide and merge, growing in size. Larger objects called protoplanets begin to form as a result of these collisions.
6. Clearing the Orbit: As protoplanets grow, their gravitational pull becomes stronger. Some protoplanets may clear their orbit of other objects, while others may collide and merge, ultimately forming planets.
7. Differentiation: As the protoplanets continue to grow, their interiors heat up due to the energy released by the collision and compression. This process causes the differentiation of planets into layers, with a dense metallic core surrounded by a rocky mantle and, in some cases, an outer gaseous atmosphere.
And thus, through the clumping together of remaining materials in the protoplanetary disk due to gravity, the planets in the solar system were formed.