Among the other planets, probably the most likely place to find evidence for life either now or in the past is on
A) Venus
B) Mercury
C) Jupiter
D) Mars
Question 2
The time between rising and setting of a star
A) is always 12 hours.
B) depends on the star's declination.
C) depends on the star's right ascension.
D) depends on the observer's latitude.
E) depends on the observer's longitude.