Author Question: Because the Hubble constant equals 70 km/s/Mpc, a galaxy with a recession velocity of 4,900 km/s ... (Read 128 times)

lidoalex · **on:** Jul 27, 2018

Because the Hubble constant equals 70 km/s/Mpc, a galaxy with a recession velocity of 4,900 km/s would be a distance of ____ Mpc from Earth.

a. 0.014
b. 70
c. 4930
d. 4970
e. 343,000

Question 2

What is the function of the receiver antenna of a radio telescope?

a. To absorb the radio energy collected by the dish
b. To collect and focus the radiation
c. To follow a signal
d. To move the telescope
e. To control the shape of the dish