What is a black hole?

• A star that has exploded

• A large asteroid

• A region of space with extremely high gravity

• A planet with no atmosphere

What did the Swift Observatory detect on March 19, 2008?

• A new planet

• A flash of gamma radiation

• A supernova

• A comet

What happens when a large star runs out of fuel?

• It becomes a planet

• It collapses and may form a black hole

• It expands indefinitely

• It turns into a comet

What is the event horizon of a black hole?

• The boundary beyond which nothing can escape

• The center of a galaxy

• The surface of a star

• The outer layer of a planet

How do black holes affect their surroundings?

• By emitting light

• By warping space-time

• By creating new stars

• By reducing gravity

What is the relationship between black holes and galaxies?

• Black holes are found only in small galaxies

• Larger galaxies have larger black holes

• Black holes do not affect galaxies

• Galaxies create black holes through collisions

What did the Chandra X-ray Observatory find in the Perseus galaxy cluster?

• A supernova

• Hot cavities created by black hole jets

• New planets

• A new galaxy

What is a quasar?

• A bright beacon of light from a distant galaxy

• A type of star

• A type of planet

• A black hole

What did Stephen Hawking predict about black holes?

• They are completely dark

• They emit heat radiation

• They can create new stars

• They are made of antimatter

What is the Large Hadron Collider used for?

• Detecting gravitational waves

• Studying the Earth's core

• Creating conditions to form black holes

• Observing distant galaxies