What does the term zenith refer to in astronomy?

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Multiple Choice

What does the term zenith refer to in astronomy?

Explanation:
The zenith is the point in the sky that's directly overhead of you. In astronomy, altitude measures how high an object is above the horizon, with 0 degrees right on the horizon and 90 degrees directly overhead. So the zenith corresponds to 90 degrees in altitude. The other options describe objects lower in the sky: 45 degrees is halfway up, 60 degrees is high but not overhead, and 0 degrees is on the horizon.

The zenith is the point in the sky that's directly overhead of you. In astronomy, altitude measures how high an object is above the horizon, with 0 degrees right on the horizon and 90 degrees directly overhead. So the zenith corresponds to 90 degrees in altitude. The other options describe objects lower in the sky: 45 degrees is halfway up, 60 degrees is high but not overhead, and 0 degrees is on the horizon.

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