If you were standing on the equator, which of the following positions in the sky would pass directly over your head (i.e., through your zenith) at some time in one 24-hour period? (See Figure 2-15 of Universe, 11th ed.)
A) the position of the Sun at summer solstice
B) the ecliptic pole, or perpendicular to the direction of the ecliptic plane
C) the vernal equinox, or the zero point of the right ascension on the celestial equator
D) the north celestial pole, or perpendicular to the direction of the celestial equator
Correct Answer:
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