Homework 5 solutions
Q7. Sunsets appear red for the same reason that some
stars in space appear red -- they are both seen through
dust particles. Why does this make them appear red?
b. The dust scatters blue light more than red light,
such that more of the red light passes directly though
the dust.
Q8. What do we see in the Orion nebula that indicates
it is a region of new star formation?
a. Hot O stars   b. Herbig-Haro Objects   c. Dust
Disks around stars   d. All of the Above   e. None of
the Above
Q9. The Pleadies is an open star cluster not too far
from us. It also represents a textbook example of a
type of nebula. Which type is it?  C. A reflection
nebula