What mechanism explains the presence of hot Jupiters around many ...

[Sufayan.ah]

What mechanism explains the presence of hot Jupiters around many other stars?
 
  A) evaporation of the disk by the stellar wind removes gas that was holding the planet at a large radius
  B) gravitational attraction by terrestrial planets that formed at small radii attract the giant planets inward
  C) rapid formation of the gas giant from evaporated rock and metal at the inner disk edge
  D) planetary migration caused by gravitational interactions between the planet and disk

Question 2

What is a circumpolar star?
 
  A) a star that is close to the south celestial pole
  B) a star that is visible from the Arctic or Antarctic circles
  C) a star that is close to the north celestial pole
  D) a star that makes a daily circle around the celestial sphere
  E) a star that always remains above your horizon

[Kdiggy]

Answer to Question 1

D

Answer to Question 2

E

[Sufayan.ah]

TYSM

[6ana001]

Excellent