Dark matter

Related Terms:

alloton super weakly interacting massive particle symmetron modified newtonian dynamics weakly interacting massive particle gravitationally interacting massive particle cold dark matter detected dark flow leptophilic scotogenic subclump matter dwarf spheroidal galaxy sterile neutrino axino inferred dark sector dark energy branon radiation dark fluid strongly interacting massive particle galactic halo hooperon dark light gravitational non baryonic dark matter warm dark matter darkon modulino scotino hot dark matter asymmetron massive compact halo object wimpzilla

Definitions:

Noun

dark matter

Definition: (cosmology) a hypothetical form of matter that is believed to make up 90 percent of the universe; it is invisible (does not absorb or emit light) and does not collide with atomic particles but exerts gravitational force

Definition: Particles of matter that cannot be detected by their radiation but whose presence is inferred from gravitational effects.