Hot Jupiters are thought to have moved closer to their parent ...

[stock]

Hot Jupiters are thought to have moved closer to their parent star than where they originated due to:
 
  A) gravitational interactions with the gas disk.
  B) magnetic attraction to the parent star.
  C) interactions with another star.
  D) large impacts.
  E) many small impacts.

Question 2

Which internal energy source is the most important in continuing to heat the terrestrial planets today?
 
  A) accretion
  B) differentiation
  C) radioactivity
  D) tidal heating
  E) all of the above

[nmyers]

Answer to Question 1

A

Answer to Question 2

C

[stock]

Wow, this really help

[vickyvicksss]

Thanks for the timely response, appreciate it