The Greeks rejected the notion that the Earth orbits the Sun. ...

[ARLKQ]

The Greeks rejected the notion that the Earth orbits the Sun. Why?
 
  A) They could not measure how big the Earth was.
  B) They weren't as smart as we are.
  C) They could not measure a change in stars' positions on the sky.
  D) They believed that the Sun is a God.

Question 2

How is right ascension similar to longitude on Earth?
 
  What will be an ideal response?

[Cheesycrackers]

Answer to Question 1

C

Answer to Question 2

Both measure positions east or west from a fixed point; Greenwich on Earth, the vernal equinox in the sky.

[ARLKQ]

Excellent

[tranoy]

Thanks for the timely response, appreciate it