UNIVERSE
SOLAR SYSTEM FORMATION
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Most stars have collided with other stars to form their planets
|
|
|
Few stars should have planets around them and thus planets are very uncommon in the universe
|
|
|
Most stars should have planets around them and thus planets are very common in the universe
|
|
|
Our solar system is the only one that contains planets
|
Detailed explanation-1: -Why does the solar nebula theory predict that planetary systems are common? The solar nebula theory predicts that planets form as a natural byproduct of star formation. As the cloud collapses to form a star, small planetesimals form. These small planetesimals accrete matter to form planets.
Detailed explanation-2: -The nebular hypothesis is the most widely accepted model for the formation of our Solar System. It explains how all of the planets formed in their current orbits, and why they are made of different materials.
Detailed explanation-3: -According to the most widely accepted theory of planet formation (the Nebular Hypothesis), the Solar System began roughly 4.6 billion years ago from a massive cloud of dust and gas (aka. a nebula).
Detailed explanation-4: -This can be explained by the nebular disk spinning in all the same direction. All of the planets rotate is essential the same plane of rotation. This can be explained by the disk being a flat disk that formed the planets.