A galaxy is a group of many stars, gases, dust, dark matter, planets, asteroids and other celestial bodies.The Milky Way is name of our galaxy. The force of gravity holds galaxies together against the general expansion of the universe.

The distance travelled by the light in one year is known as a light-year. A Light year is a unit used to express the distance between the different celestial bodies. It can be expressed as a unit of length but not time. One light-year can be defined as the distance travel by the light in one year. It takes the light of the sun eight minutes to reach us on earth.

GALAXY SCIENCE IN EVERYDAY LIFE>Chapter 17 - The Night Sky>ORAL Questions

Subject Experts Solutions for Chapter: The Night Sky, Exercise 1: ORAL Questions

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Subject Experts Science Solutions for Exercise - Subject Experts Solutions for Chapter: The Night Sky, Exercise 1: ORAL Questions

Attempt the free practice questions on Chapter 17: The Night Sky, Exercise 1: ORAL Questions with hints and solutions to strengthen your understanding. GALAXY SCIENCE IN EVERYDAY LIFE solutions are prepared by Experienced Embibe Experts.