According to general relativity, the universe must conform to one of three possible types: open, flat, or closed. The total amount of mass and energy in the universe (denoted by the Greek letter U) determines which of the three possibilities applies to the
According to general relativity, the universe must conform to one of three possible types: open, flat, or closed. The total amount of mass and energy ...
It is generally believed that most of the matter in the universe is dark, i.e. cannot be detected from the light which it emits (or fails to emit). Dark matter has important consequences for the evolution of the Universe and the structure within it. This b
It is generally believed that most of the matter in the universe is dark, i.e. cannot be detected from the light which it emits (or fails to emit). Da...
It is believed that most of the matter in the universe is dark, that is, cannot be detected from the light which it emits (or fails to emit). Its presence is inferred indirectly from the motions of astronomical objects, specifically stellar, galactic, and
It is believed that most of the matter in the universe is dark, that is, cannot be detected from the light which it emits (or fails to emit). Its pres...
