How do astronomers think Saturn generates its internal heat? ...

[jeatrice]

How do astronomers think Saturn generates its internal heat?
 
  A) radioactive decay
  B) internal friction due to its high rotation rate
  C) chemical processes
  D) by raining dense helium droplets from higher to lower altitudes, resembling the process of differentiation
  E) nuclear fusion in the core

Question 2

The two teams involved in the discovery of the cosmic microwave background radiation were at:
 
  A) NRAO and Cal Tech.
  B) JPL and the Hubble Space Institute.
  C) Kitt Peak and the University of Arizona.
  D) Bell Labs and Princeton.
  E) Mt. Palomar and the VLA.

[Benayers]

Answer to Question 1

D

Answer to Question 2

D

[jeatrice]

Thank you!

[Benayers]

Always glad to help...