Stars and Galaxies: Introduction

The video tutorial explores the vastness of space, focusing on the billions of stars and numerous galaxies it contains. It delves into the different types of stars and galaxies, their characteristics, and the methods used to study them. The tutorial aims to answer fundamental questions about these celestial bodies and their fascinating features.

What does space contain in addition to billions of stars?

• A few asteroids

• Only planets

• Many galaxies

• Just comets

Which of the following is a characteristic of stars?

• They are all the same size

• They emit light

• They are always cold

• They are invisible

What is a galaxy?

• A kind of asteroid

• A type of planet

• A collection of stars

• A single star

What is one way people study stars and galaxies?

• By listening to them

• By tasting them

• By touching them

• By observing them

Why is it important to study stars and galaxies?

• To find new planets

• To understand the universe

• To make new friends

• To travel faster