In cosmology, what is the “inflationary period”?
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At an age of 380,000 years, the temperature of the universe…
At an age of 380,000 years, the temperature of the universe had fallen to 3000 K, and electrons could then combine with protons to produce neutral hydrogen gas. What major transition took place in the universe at this time?
What is an SBc galaxy?
What is an SBc galaxy?
Infants with congenital CMV need routine screening throughou…
Infants with congenital CMV need routine screening throughout childhood to evaluate for which of the following?
The expansion of the universe takes place
The expansion of the universe takes place
Recent results from very bright supernovae in very distant g…
Recent results from very bright supernovae in very distant galaxies indicate that the expansion of the universe
In relation to the universe, what does “isotropy” mean?
In relation to the universe, what does “isotropy” mean?
What do astronomers mean when they say that the universe is…
What do astronomers mean when they say that the universe is homogeneous?
Does the halo of the Milky Way Galaxy include other galaxies…
Does the halo of the Milky Way Galaxy include other galaxies?
The distance-measuring techniques, arranged in order of the…
The distance-measuring techniques, arranged in order of the distance for which they are MOST effective (from least to most) are