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abstraction > mathematical concept > number > quantity > mass > luminous mass
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luminous mass comparison table
Subject is an instance of is a kind of has definition
mass quantityThe measure of the inertia of an object, determined by observing the acceleration when a known force is applied. The gravitational force acting on an object is found to be proportional to its mass, as is the gravitational force that it exerts on other objects.
luminous massmass The mass contributed by luminous matter in galaxies (see missing mass). Luminous mass density, 5 × 10-32 g cm-3 for H0 = 50 km s-1 Mpc-1.

Next massmass of the Galaxy    Upmass    Previous massJeans mass