Author Question: __________ can be used to determine the galaxy's mass if the galaxy is reasonably close, so that the ... (Read 72 times)

haleyc112 · **on:** Jul 27, 2018

__________ can be used to determine the galaxy's mass if the galaxy is reasonably close, so that the Doppler shift of the galaxy disk material can be measured at several distances from the galaxy's center relative to the center.

a. The Hubble constant
b. A galaxy's color
c. A galaxy's rotation curve
d. A galaxy's diameter
e. The velocity dispersion method

Question 2

Energy flows by radiation or convection inside stars but almost never by conduction.

a. True
b. False
Indicate whether the statement is true or false