Question

Stars in a galaxy tend to exist mainly in:

• A. groups
• B. double stars
• C. lone stars
• D. none of the above

Answer 1

The correct option is A

groups

1. As we know giant clouds of gas (hydrogen) and dust are known as nebulas.
2. Inside the nebula, hydrogen gas is squeezed due to tremendous gravitational force.
3. As a result nuclei of hydrogen fused to form helium gas and a vast amount of energy is liberated.
4. Therefore nebulas are called the birthplace of stars.
5. A nebula can give birth to many stars.
6. Therefore stars in a galaxy tend to exist in groups. Hence option A is the correct answer.