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The basic reference point in astronomy is a direction defined by the intersection of the plane of the Earth's orbit with the plane of the Equator. It is called the First Point of Aries and the Sun is near that point around March 21.
Unfortunately the First Point of Aries drifts slowly because of precession, so star maps have to be updated every 50 years and the First Point of Aries is not even in the constellation of Aries any more.
Bright stars are also used as reference points.
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∙ 9y ago
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Why do you see different constellations at different points of the year?
The sun is always in different places at different times.
Is the phase if the moon different places on earth?
Yes, this is because people at different geological points on earth see different angles of the illuminated light of the moon. Therefor they see a different phase at different times.
What are 3 examples of reference points that are stationary relative to earth?
Motion movement and changes
What is the definition of terrestrial navigation?
Terrestrial navigation is the method used by mariners that uses landmarks as reference points.
The compass needle always points to what star?
The needle of a compass can point to any star you'd like it to. Just flip and turn the compass and the needle will be in different directions, poinling to different stars. But a compass isn't anything to do with stars. Tatyana Martynova
What different places do astronomers use reference?
The basic reference point in astronomy is a direction defined by the intersection of the plane of the Earth's orbit with the plane of the Equator. It is called the First Point of Aries and the Sun is near that point around March 21. Unfortunately the First Point of Aries drifts slowly because of precession, so star maps have to be updated every 50 years and the First Point of Aries is not even in the constellation of Aries any more. Bright stars are also used as reference points.
Why do you see different constellations at different points of the year?
The sun is always in different places at different times.
What is the boiling point of any substance?
different substances have different boiling points, a main reference to boiling points is the boiling point of water (H2O) which is 100 degrees Celsius
Explain how point (4 5) is the same as point (5 4).?
No they are not identical points because when plotted on the Cartesian plane they will be in different places.
How important are the reference points in a coordinate system?
If the reference points are not correct, the location of any coordinate will be incorrect.
What are useful reference points?
Reference points are used in order to easily access information that is in a larger collection of data.
