0
What else can I help you with?
What is the point on the celestial sphere directly above observer?
The zenith.
A is the point on the celestial sphere directly above the head of the observe?
That's called the observer's "zenith".
What does the Horizon great circle on the celestial sphere represent?
A circle through the Earth's sphere perpendicular to the observer's latitude
What is an imaginary point in the sky directly above the observers head?
The zenith.
What is the direction directly above a point on a celestial sphere?
west
Why the Doppler shift tells us only about the motion directly along the line of sight between a light source and an observer but not about motion across the celestial sphere?
The Doppler shift only measures the component of motion directly towards or away from the observer. Motion across the celestial sphere does not impact the frequency of light perceived by the observer along the line of sight. This is because the Doppler effect is only sensitive to changes in the relative velocity between the source and observer along the line connecting them.
What does nadir mean?
Answer1. an extreme state of adversity; lowest point of anything2. the point below the observer that is directly opposite the zenith on the imaginary sphere against which celestial bodies appear to be projected
What is it called when an imaginary sphere surrounds the earth?
This could be the magnetosphere, the atmosphere, or the biosphere, depending on your needed reference frame.
Are the stars located with the respect to the celestial sphere on the surface of the sphere?
No, because there is no such thing as the celestial sphere. So there is no inner surface of a celestial sphere.
What are Celestial Poles?
The north and south celestial poles are the two imaginary points in the sky where the Earth's axis of rotation, indefinitely extended, intersects the imaginary rotating sphere of stars called the celestial sphere. The north and south celestial poles appear permanently directly overhead to an observer at the Earth's North pole and South pole respectively. As the Earth spins on its axis, the two celestial poles remain fixed in the sky, and all other points appear to rotate around them, completing one circuit per day.
What are the celestial poles?
The north and south celestial poles are the two imaginary points in the sky where the Earth's axis of rotation, indefinitely extended, intersects the imaginary rotating sphere of stars called the celestial sphere. The north and south celestial poles appear permanently directly overhead to an observer at the Earth's North pole and South pole respectively. As the Earth spins on its axis, the two celestial poles remain fixed in the sky, and all other points appear to rotate around them, completing one circuit per day.
What is the other name of celestial globe?
celestial globe is a physical model of celestial sphere
