ASTRON 103 Chapter 72: ch 72 stars of the milky way

The most metal-rich terrestrial planet is

A. Mercury

B. Pluto

C. Mars

D. Earth

Which of these things poses the greatest hazard to communications satellites?

(a) Photons from the Sun

(b) Solar magnetic field 

(c) Protons from the Sun

In what range of masses are most stars found?

A. 0.1 to 5 Solar masses

B. 0.0001 to 20 Solar masses

C. 0.1 to 100 Solar masses

D. 0.001 to 10 Solar masses