The Ptolemaic model has planets moving in A) elliptical orbits ...

[humphriesbr@me.com]

The Ptolemaic model has planets moving in
 
  A) elliptical orbits about the Sun
  B) a simple circle about the Earth
  C) a simple circle about the Sun
  D) small circles, the centers of which move in a larger circle about the Earth

Question 2

The cosmological redshift is actually not a velocity at all, but a measure of the expansion of space-time.
 
  Indicate whether the statement is true or false

[rosiehomeworddo]

Answer to Question 1

D

Answer to Question 2

TRUE

[humphriesbr@me.com]

Thanks for the timely response, appreciate it

[zacnyjessica]

Great answer, keep it coming