Black Holes (Critical Reading Series)

A black hole results from the death of a

• sun like our own.

• blazing comet.

• a giant star.

Gravity in a black hole is

• twice that of Earth.

• a hundred times that of Earth.

• so great that even light can't escape it.

Black hole matter the size of a marble

• weighs as much as a mountain.

• takes two people to lift.

• would sink several feet into the ground.

A trip into a black hole would

• result in a slow, painful death.

• take four years to complete.

• pull a person apart.

Some scientists believe that black holes may someday

• serve as time machines.

• turn into white holes.

• be used as relay stations for space travel.