1 A quasar is now thought to be
A. a very active and variable distant star. B. a distant
planetary nebula. C. the central core of a supernova. D. the
central core of an active galaxy.
2 A redshift in the spectrum of a distant galaxy indicates that
the galaxy is
A. hot. B. cool. C. receding from us. D. advancing toward us. E.
[None of the above.]
3 Barred spiral galaxies
A. are a special type of elliptical galaxy. B. have little dust
in their disks. C. are more numerous than elliptical galaxies. D.
[None of the above.]