NASA's Planetary Defense Quiz

What percentage of near-Earth objects (NEOs) did NASA identify by 2010?

• 50%

• 70%

• 90%

• 100%

How many near-Earth objects (NEOs) are estimated to be left to log?

• 1,000

• 25,000

• 17,000

• 50

What is the size of the asteroids NASA is currently working to log?

• 1 kilometer

• 1 meter

• 19 meters

• 140 meters

What is the name of the telescope NASA plans to build to locate asteroids?

• AsteroidFinder

• NEOCam

• AstroCam

• SpaceScope

What does PHA stand for in the context of asteroids?

• Primary Hazardous Asteroids

• Potentially Hazardous Asteroids

• Planetary Hazardous Asteroids

• Public Hazardous Asteroids

How far do potentially hazardous asteroids pass from Earth's orbit?

• 15 million kilometers

• 5 million kilometers

• 7.5 million kilometers

• 10 million kilometers

What is the name of the test scheduled to be conducted on the asteroid Didymos?

• Asteroid Redirect Test

• HAMMER

• DART

• Asteroid Impact Test

What is the width of the moon of the asteroid Didymos?

• 100 meters

• 150 meters

• 200 meters

• 250 meters

What is the purpose of the Hypervelocity Asteroid Mitigation Mission for Emergency Response (HAMMER)?

• To track asteroids

• To log asteroids

• To blow up asteroids

• To redirect asteroids

What was the size of the asteroid that exploded over Chelyabinsk in 2013?

• 140 meters

• 50 meters

• 19 meters

• 10 meters