Understanding Black Holes and Galaxies

What happens to a star much larger than our sun at the end of its life?

• It explodes into a nebula.

• It forms a new solar system.

• It turns into a black hole.

• It becomes a supernova.

What is the estimated mass of the object at the center of the Milky Way?

• Four billion times the mass of the sun

• Four million times the mass of the sun

• Four times the mass of the sun

• Four hundred times the mass of the sun

What is unique about the supermassive black hole at the center of our galaxy?

• It is visible to the naked eye.

• It is the largest in the universe.

• It emits a bright light.

• It has no light emission.

How do supermassive black holes scale with the galaxies they are found in?

• They have no relation to galaxy size.

• They are larger in larger galaxies.

• They are smaller in larger galaxies.

• They are the same size in all galaxies.

What is still a mystery to astronomers about black holes and galaxies?

• Why black holes are invisible.

• Why larger galaxies have larger black holes.

• Why black holes are found in every galaxy.

• Why black holes emit light.