Understanding Galaxies

What is the primary force that holds a galaxy together?

• Magnetism

• Nuclear force

• Gravity

• Electromagnetic force

What is the NGC 3982 galaxy an example of?

• Spiral galaxy

• Dwarf galaxy

• Irregular galaxy

• Elliptical galaxy

What did astronomers discover in the Hubble Ultra Deep Field?

• A new planet

• A single massive galaxy

• Thousands of stars

• Thousands of galaxies

How are galaxies primarily classified?

• By their shape

• By their size

• By their color

• By their age

Which of the following is NOT a type of galaxy shape?

• Rectangular

• Elliptical

• Irregular

• Spiral

In which galaxy is our solar system located?

• Triangulum

• Andromeda

• Milky Way

• Whirlpool

What is at the center of the Milky Way galaxy?

• A cluster of planets

• A nebula

• A supermassive black hole

• A giant star

How wide is the Milky Way galaxy approximately?

• 10,000,000 light years

• 1,000,000 light years

• 100,000 light years

• 10,000 light years

What separates the inner planets from the outer planets in our solar system?

• The Asteroid Belt

• The Kuiper Belt

• The Oort Cloud

• The Milky Way

What is the farthest known region of our solar system?

• The Oort Cloud

• The Kuiper Belt

• The Asteroid Belt

• The Milky Way