Astronomy   View all facts   Glossary   Help
abstraction > mathematical concept > number > quantity > density > critical density
Next densitynuclear density    Updensity    Previous densitycosmic matter density   

critical density comparison table
Subject is a kind of has definition
densityquantityAn object's mass divided by its volume. Cotton has a low density; lead has a high density. Red giants have a low density; white dwarfs have a high density.
critical densitydensityIf the cosmological constant is assumed to vanish, then the critical mass density is that density which puts the universe just on the border between eternal expansion (open universe) and eventual collapse (closed universe).

Next densitynuclear density    Updensity    Previous densitycosmic matter density