Dark matter (or latent mass) is the general name for a set of astronomical objects that do not emit electromagnetic or neutrino radiation of sufficient intensity for observation, but are observable indirectly from the gravitational effects on visible objects. The problem of dark matter (ie the proof of its existence) consists of two problems: • astrophysical, that is, the contradiction of the observed mass of gravitationally bound objects and their systems with their observable parameters determined by gravitational effects; • cosmological – the contradictions of the observed cosmological parameters of the average density of the Universe obtained from astrophysical data.
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