Question 4 - Fill in the blanks - Chapter 1 Class 6 Geography - The Earth and the Solar System - Geography

A huge system of stars is called________.

1. Nebula
2. Cluster
3. Constellation
4. Galaxy

Answer by Student

So, the correct answer is (D): Galaxy

Detailed Explanation by Teachoo

-lock-

Let’s check all the options

• Option (A) Nebula - A nebula is not a system of stars, but a cloud of gas and dust in space. Nebulae are often the birthplaces of stars, as the gas and dust collapse under gravity and form new stars. Some nebulae are also the remnants of dying stars, such as supernova explosions or planetary nebulae. So, this is incorrect .❌
• Option (B) Cluster - A cluster is not a huge system of stars, but a smaller group of stars that are bound by gravitation. Cluster can be divided into two types: open clusters and globular clusters. Open clusters are loosely bound and contain up to a few thousand stars. Globular clusters are tightly bound and contain up to millions of stars. Clusters are usually found within galaxies. So, this is incorrect .❌
• Option (C) Constellation - A constellation is not a system of stars, but a group of stars that looks like a particular shape in the sky and has been given a name. These stars are far away from Earth and are not connected to each other at all. There are 88 officially recognized constellations. Constellations are also found within galaxies. So, this is incorrect .❌
• Option (D) Galaxy - A galaxy is a huge system of stars, meteors, dust, planets, and dark matter that is kept together by gravity. There are many galaxies in the universe. The galaxy we live in is called the Milky Way Galaxy. So, this is correct .

Thus, option (D) is correct. ✅

-endlock-