Why do astronomers believe that Triton is a captured moon? A) ...

[vicky]

Why do astronomers believe that Triton is a captured moon?
 
  A) Triton is very small and potato-shaped, which is common of captured moons.
  B) Triton is too large to have been formed in the miniature solar nebula thought to have surrounded Neptune in its very early history.
  C) Triton appears to be made mostly of ice.
  D) Triton orbits Neptune in a direction opposite that of Neptune's rotation.

Question 2

What discoveries or further ideas were most critical for Copernicus' hypothesis that the planets orbit the sun to be promoted to a theory?
 
  A) observation of Venus' phases
  B) observation of sunspots
  C) observation of the moons of Jupiter
  D) A and B
  E) A and C

[poopface]

Answer to Question 1

D

Answer to Question 2

E

[vicky]

TY

[poopface]

You're welcome