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Because the universe is expanding, the question of the distance to a very distant galaxy is hard to answer. It all depends on your point of view. This is the problem of defining a distance in an expanding universe: Two galaxies are near to each other when the universe is only 1 billion...
At the start of the twentieth century our knowledge of the universe was far more limited than it is today. The size and structure of our universe had been a topic of discussion for many years. The sky surveys of William Herschel (1738- 1822) hinted at a structure. In the early ...
The Cosmic Year is assumed to be equivalent to 13,798,000,000 real years (which is the current figure for the age of the Universe plus or minus 37 million years).With this scale 1 day in the Cosmic Year represents 37,800,000 years (roughly the uncertainty in the age of the Universe)...
IV - The evolution of the correlation function The evolution of the two-point correlation function for the large-scale distribution of galaxies in an expanding universe is studied on the assumption that... McClelland,J.,Silk,... - 《Astrophysical Journal》 被引量: 172发表: 1979年 Towards an...
chromatic scale- a 12-note scale including all the semitones of the octave musical scale,scale- (music) a series of notes differing in pitch according to a specific scheme (usually within an octave) Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex...
Research over the past 25 years has led to the view that the rich tapestry of present-day cosmic structure arose during the first instants of creation, where weak ripples were imposed on the otherwise uniform and rapidly expanding primordial soup. Over 1
In fact the most serious problem in the direction of the unificationFootnote 1 of the whole cosmic history is the difficulty of merging these two epochs because of the form of the dependence of the energy density of dust and radiation on the scale factor (i.e. on redshift). In ΛCDM ...
Emergent universeInflationThe dilaton-gravity sector of a linear in the scalar curvature, scale invariant Two Measures Field Theory (TMT), is explored in detail in the context of closed FRW cosmology and shown to allow stable emerging universe solutions. The model possesses scale invariance which ...
Taylor & Francis Online :: The large scale structure of the universe I. General properties. One-and two-dimensional models - Geophysical & Astrophysical Fl... (1982). The large scale structure of the universe I. General properties. One-and two-dimensional models. Geophysical & Astrophysical Flu...