During a protostar's T Tauri phase, it:
A) begins a period of reduced activity.
B) expands dramatically.
C) lies on the main sequence.
D) may develop very strong winds.
E) changes its spin direction.
Question 2
If you wanted to observe stars behind a molecular cloud, in what wavelength of light would you most likely observe?
A) ultraviolet
B) visible
C) infrared
D) X-ray
E) gamma-ray