Hubble Space Telescope Quiz

How long does it take for the Hubble Space Telescope to complete one orbit around Earth?

• 95 minutes

• 60 minutes

• 180 minutes

• 120 minutes

What is the primary source of power for the Hubble Space Telescope?

• Wind turbines

• Nuclear reactor

• Hydrogen fuel cells

• Solar arrays

How smooth is Hubble's primary mirror?

• As smooth as a sandy beach

• As smooth as the width of the United States with no bump higher than 6 inches

• As smooth as a mountain range

• As smooth as a polished marble

How many times have astronauts visited Hubble for servicing missions?

• Nine times

• Seven times

• Five times

• Three times

Approximately how many peer-reviewed scientific papers have been published based on Hubble's observations?

• 22,000

• 10,000

• 5,000

• 50,000