Question

astronomers think that most galaxies are centered by a
Select Answer
massive stars
nebula large planet
black hole
which exerts
Select Answer
centrifugal force
gravitational pull
centripetal force
mangnetic pull
that binds the galaxy together.

Answer 1

Astronomers think that most galaxies are centered by a **black hole**, which exerts a **gravitational pull** that binds the galaxy together.