Question

A chunk of an asteroid that has broken off in outer space is called a

Answer 1

A chunk of an asteroid that has broken off in outer space is called a meteoroid.A piece of an asteroid is still an asteroid, until you get down to pretty small. Then it's called a meteoroid.

Answer 2

the sentence could be complete in the following way: "A chunk of an asteroid that has broken off in outer space is called a Meteoroid. This is a small rocky or metallic body travelling in the space. they are smaller because they are fragments of asteroids or comets. they might be sized between grains and one meter-wide.