Author Question: Which stars always have large positive absolute magnitude? a. stars of high luminosity b. stars ... (Read 165 times)

ap345 · **on:** Jul 27, 2018

Which stars always have large positive absolute magnitude?

a. stars of high luminosity
b. stars of low luminosity
c. nearby stars
d. distant stars
e. not enough information given

Question 2

The main reason for positioning many radio telescopes across a large area and combining the signals is

a. to observe more objects in a shorter amount of time.
b. provide a backup system if one or more of the telescopes go down.
c. to produce higher resolution images.
d. to avoid interference between signals from the separate telescopes.
e. to account for the motion of objects in the sky as a result of the Earth's rotation.