Assertion: dark matter | /r/HasProperty | treated as separate entities
Facets:
value: always
type: TEMPORAL
Source sentences:
text: Dark matter and dark energy have always been treated as separate entities, but are they in fact two sides of the same coin?
text: Dark matter and dark energy have been considered separate phenomena, but Jamie Farnes, an astrophysicist at Oxford University, believes that both dark matter and dark energy might exist together as a "dark fluid of negative masses.