Translations:Adventist Youth Honors Answer Book/Nature/Stars (General Conference)/26/en
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10. Explain zenith and nadir.
Zenith is the point in space directly overhead. If you extend a line from the zenith to the point on Earth upon which you are standing, and continue that line through the Earth and out the other side, it would point to the nadir. In other words, nadir is the direction pointing directly below a particular location. The line connecting the zenith and nadir passes through the point on Earth where you're standing and also passes through the center of the Earth and out the other side.
