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Gravity causes the last of the star's matter to collapse inward and compact. This is the white dwarf stage which is extremely dense. White dwarfs shine with a white hot light but once all of their.
The gravitational. The cluster does not behave as scientists would expect it to if only the visible matter is generating the gravity present in the cluster. 'dark matter' theory suggests that a huge amount of dark. Gravitational pull see gravity gravity the force of attraction between two objects which is influenced by the mass of the two objects and the distance between the two objects.
