Q. Which of the following phenomenon has a role in formation of stars like the sun in our solar system?
1.From a collision between two massive planetary objects
2.From a collapse of a cloud of matter under the pressure of gravity
3.Presence of Black hole
Select the correct answer using the code given below:
Answer: C
Notes:
Collisions between planetary objects do occur, and these collisions actually play a very important role in the formation of rocky planets. But collisions like this do not form stars.
When a cloud of matter, called a nebula, collapses in on itself, the atoms within it jostle each other. This eventually creates enough heat that the atoms fuse together and create a great deal of energy. This energy is the birth of a star.
Black holes can form when massive stars die, or collapse. So they cannot help in formation of stars.
Source- Article
