Question

a pattern of stars is called a *
quasar
galaxy
pulsar
constellation
the brightness of a star when viewed from earth. *
parallax
absolute magnitude
apparent magnitude
doppler effect

Explanation:

A constellation is a pattern of stars. Apparent magnitude measures the brightness of a star as seen from Earth. Parallax is related to the apparent shift in position of a star, absolute magnitude is the brightness at a standard - distance, and the Doppler Effect is about the change in wavelength due to motion.

Answer:

1. D. constellation
2. C. apparent magnitude