There is no word which means the exact opposite of galaxy.
A galaxy is a massive group of stars and other material, so you might be able to say that the opposite of a galaxy is a single star.
However, this would be similar to saying that the opposite of a group of people is one person - which is not quite correct.
The antonym for universe would be nothing.
A synonym for galaxy could be dust and clouds.
Space or universe
you can't
What is synonym for merchant? What is synonym for merchant?
synonymize
What is the synonym government.
you are a synonym of abandoned.
no it is not a synonym
clusters.
What is synonym for merchant? What is synonym for merchant?
synonymize
What is the synonym government.
you are a synonym of abandoned.
Our galaxy is a barred spiral galaxy.
no it is not a synonym
a synonym to..?
A synonym for varied is diverse.
A synonym for temper is temperament.
The synonym for abducting is kidnapping.
The Andromeda Galaxy is a spiral galaxy.