Assertion: universe's density | /r/CapableOf | remain unchanged
Facets:
value: in the steady-state model
type: OTHER
value: due to a continuous creation of matter
type: CAUSE
Source sentences:
text: In the steady-state model, the density of matter in the expanding universe remains unchanged due to a continuous creation of matter, thus adhering to the perfect cosmological principle, a principle that asserts that the observable universe is practically the same at any time and any place.