| 单词 | structure formation in the universe |
| 释义 | structure formation in the universe The nonuniform distribution of matter throughout the universe. Several mechanisms have been suggested for the ‘clumpy’ structure formation but none of the competing theories are regarded as definitive. In general, ‘clumpiness’ occurs when the matter is not homogeneous, i.e. the gravitational attraction between particles of matter ceases to be uniform. This can occur as a result of quantum fluctuations in the early universe associated with inflation. There is some evidence for this hypothesis, based on measurements from COBE. An alternative mechanism for structure formation is based on cosmic strings |
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