Is there a difference between the universe and the cosmos? I used to think that the cosmos was a sort of container for the universe, one that could contain potentially infinite universes.
Learn English – What’s the difference between the universe and the cosmos
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Best Answer
In technical (astrophysics) usage no.
There are a number of different uses of universe but cosmos isn't used as a specific technical term. Cosmos is sometimes used in popular works as a homage to Carl Sagan's famous TV series.
Cosmological is used as a technical term, eg. Cosmological constant, Cosmological redshift - because using "Universal" would be confusing.