Assertion: metric expansion | /r/HasProperty | observed feature
Facets:
value: by cosmologists
type: OTHER
value: on the basis
type: OTHER
Source sentences:
text: Observational cosmologists have discovered evidence – very strong in some cases – that supports these assumptions, and as a result, metric expansion of space is considered by cosmologists to be an observed feature on the basis that although we cannot see it directly, scientists have tested the properties of the universe and observation provides compelling confirmation.