Stars & the Solar System- 1 - UPSC Sci Tech Free MCQ Test with solutions

The stars, planets, moon and other objects in the sky are together called celestial bodies.

A constellation is not the member of the solar system. These are the group of stars that forms a recognizable shape is known as Constellation.

The size of moon keeps changing when viewed from earth. This change is called phases of moon. The part of moon on which sunlight falls is visible to us.

In cities a number of industries and vehicle emits large amount of dust and smoke that makes sky not so clear.

Halley’s Comet is visible from earth after about 76 years. This is the time-period of revolution of this comet.

Star, moon and planets are celestial bodies as they are located in sky but artificial satellite made by human beings revolves around the earth in fix orbit for fix interval of time.

Star, moon and planets are celestial bodies as they are located in sky but artificial satellite made by human beings revolves around the earth in fix orbit for fix interval of time. Stars appear small because stars are very far from earth. Star appears as small balls as light from the star reaches to us in very small amount due to distance.

ISRO stands for Indian space research organisation. It is the space agency of the Indian government headquartered in Bengaluru, Karnataka.

Sun and other stars are huge bodies made up of hot gases. They emit light due to nuclear fusion of hydrogen into Helium.

The Sun is the ultimate source of light and heat that support life. Life is possible on earth due to Sun. The energy required for all kinds of living organism come from Sun.