Exploring the Milky Way Galaxy

What is the largest galaxy in the Local Group?

• Small Magellanic Cloud

• Milky Way

• Andromeda Galaxy

• Large Magellanic Cloud

Approximately how many stars does the Milky Way contain?

• 1 trillion

• 500 billion

• 200 to 400 billion

• About 100 billion

What is the diameter of the Milky Way?

• 100,000 light years

• 50,000 light years

• 1 million light years

• 200,000 light years

What percentage of the Milky Way's visible mass is interstellar gas and dust?

• 5%

• 10%

• 25%

• 15%

How long does it take for stars in the outer areas of the Milky Way to complete one orbit around the galactic center?

• 1 billion years

• 250 million years

• 100 million years

• 500 million years

Tags

NGSS.HS-ESS1-4

What type of stars are found in the Milky Way's halo?

• Population I stars

• Red giants

• Population II stars

• Population III stars

How many stars are estimated to form in the Milky Way each year?

• Over 50 stars

• 1 to 2 stars

• 3 to 5 stars

• 10 to 20 stars

What celestial objects began to form our solar system?

• A black hole

• A supernova remnant

• A collision of galaxies

• A cloud of gas and dust