Galactic Distances and Scale Models

The video introduces galaxies using a scale model, comparing the Milky Way and Andromeda. It explains the size of the Milky Way and calculates the distance to Andromeda using a simple model. The video concludes by mentioning the local galactic neighborhood, which includes many other galaxies.

What is the purpose of introducing a scale model in the context of galaxies?

• To understand the distance between galaxies

• To calculate the speed of light

• To measure the size of the Milky Way

• To compare the brightness of stars

If the Milky Way is represented on a smartphone, what device is used to represent Andromeda in the scale model?

• A smartwatch

• A tablet

• A television

• A laptop

How wide is the Milky Way galaxy?

• 200,000 light years

• 500,000 light years

• 50,000 light years

• 100,000 light years

What is the distance between the Milky Way and Andromeda?

• 1 million light years

• 2.5 million light years

• 10 million light years

• 5 million light years

How many times wider is the distance to Andromeda compared to the width of the Milky Way?

• 15 times

• 20 times

• 10 times

• 25 times

What surrounds the Milky Way and Andromeda in the local galactic neighborhood?

• Thousands of planets

• Millions of asteroids

• Hundreds of stars

• Dozens of galaxies