Author Question: The Ptolemaic model has planets moving in A) elliptical orbits about the Sun B) a simple circle ... (Read 44 times)

humphriesbr@me.com · **on:** Jul 27, 2018

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