Term
| The 19-year Metonic cycle for fitting together the tropical year and the synodic month is an example of |
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Definition
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Term
Our division of the day into 24 hours
originated with the |
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Definition
Egyptian decans who used to divide
the nighttime |
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Term
The instrument which is used to tell
when the Sun is at the zenith but not
the time of day is the |
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Definition
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Term
| At Ballochroy the distance from the megalith to the mountain is 19 miles, while the distance from the center of Stonehenge to the Heel Stone is several hundred feet. What can one infer about the relative precision of the two alignments? |
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Definition
| Ballochroy is more precise |
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Term
| The imaginary point directly below the observer |
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Definition
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Term
The altitude of the celestial pole in the
observer's sky is equal to |
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Definition
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Term
| The date on which the Sun is farthest north of the celestial equator is |
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Definition
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Term
the Sun rises farthest north of east at
intervals of a |
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Definition
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Term
ecliptic coordinate measured eastward from the vernal equinox along the
ecliptic is? |
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Definition
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Term
The sidereal month is defined as
the Moon's period with respect to the |
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Definition
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Term
The full Moon should set approximately
at |
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Definition
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Term
| When the Moon's ascending node is on top of the vernal equinox, the Moon will pass through its |
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Definition
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Term
The fact that the Moon's nodes regress,
(i.e. move westwards with respect to the
fixed stars) while the Moon moves eastwards means that |
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Definition
the nodical month will be shorter
than the sidereal month |
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Term
| Suggested astronomical connections for Stonehenge definitely not currently accepted |
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Definition
use of the Aubrey holes to predict
eclipses |
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Term
first appearance in the morning sky before
sunrise |
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Definition
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