Universe means "all existing matter and space considered as a whole; the cosmos." The words can be used as synonym of each other, or you can use cosmos when you are referring to the well-ordered aspect of the universe. Yes, there is a difference. Cosmos refers to the order found within the universe.

Answer:

the universe seen as a well-ordered whole.

"he sat staring deep into the void, reminding himself of man's place in the cosmos"