Before about 50,000 years after the Big Bang, the universe was: ...

[rl]

Before about 50,000 years after the Big Bang, the universe was:
 
  A) radiation dominated.
  B) quark dominated.
  C) lepton dominated.
  D) matter dominated.
  E) dark energy dominated.

Question 2

What is differential rotation, and what surprises did it have for us with Uranus?
 
  What will be an ideal response?

[mmpiza]

Answer to Question 1

A

Answer to Question 2

Differential rotation means that different latitudes of the planet's cloud deck rotate at different speeds. For Jupiter and Saturn, it is the bulging equator that is the fastest region on the disk, but for reasons not understood, at Uranus the equator rotates slower than higher latitudes.

[rl]

Excellent

[sultansheikh]

Great answer, keep it coming