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The place where the extended axis of the Earth would touch the celestial sphere is called the celestial?
Pole
Why do astronmers find it useful to retain the fiction of the celestial sphere to describe the sky?
Navigators, also, continue to use the concept of the "celestial sphere" because it makes the math easier. And for most purposes, it is accurate enough. The stars are all so far away, and move so little over a lifetime, that the sky IS essentially unchanging.
The formula for the volume of a sphere?
2 pi r times the circumference sqaured. then take this and find out its square root. This however, only works if you have the circumference. If you have both the volume and the height, you can find the formula for the radius by solving the following literal equation for "r": V=1/3 r^2(3.14)(H) r=(3V/pi H)square root
What is the formula for the mass of a sphere?
The mass of a sphere is 4/3*pi*r3*d where r is the radius of the sphere and d is the density of the material of the sphere.
What is a zodiac lion?
A zodiac is a band of the celestial sphere extending about 8° to either side of the ecliptic that represents the path of the principal planets, the moon, and the sun. Zoodiacs usually show constellations, and one zodiac sign is Leo, who is named after the constellation of Leo, the Greek word for "lion".
The great circle passing through the south point on the horizon the zenith and the north point on the horizon is called the?
its the celestial sphere, Mr. Smith taught me that today, smart man!
What is an almucantar?
An almucantar is a small circle on the celestial sphere, parallel to the horizon, used in astronomy and navigation to show the altitude of a star or some other heavenly body.
What does a sphere represent?
a circle
How did the ancient Greeks study stars?
The ancient Greeks developed instruments such as the armillary sphere to track the movement of objects in the plane of the celestial equator against the annual motion of the Sun. This basic device consisted of a set of graduated rings that represented important circles on the celestial sphere, such as the horizon, the celestial equator, the ecliptic, and the meridian. These rings formed a skeletal celestial sphere. A movable sighting arrangement allowed early astronomers to observe a celestial object and then read off its position using the markings on the relevant circles.Ptolemy and other Greek astronomers used the quadrant, a graduated quarter of a circle constructed to allow an observer to measure the altitude of celestial objects above the horizon. An astronomer would sight a target celestial object along one arm of the quadrant and then read off its elevation from a scale (from 0 to 90 degrees) with the help of a plumb line suspended from the center of the quarter circle. With this arrangement a celestial object just on the horizon would have an elevation of 0 degrees, while an object at zenith would have an elevation of 90 degrees.(will add more if i find out more)
How did the Greeks study the stars?
The ancient Greeks developed instruments such as the armillary sphere to track the movement of objects in the plane of the celestial equator against the annual motion of the Sun. This basic device consisted of a set of graduated rings that represented important circles on the celestial sphere, such as the horizon, the celestial equator, the ecliptic, and the meridian. These rings formed a skeletal celestial sphere. A movable sighting arrangement allowed early astronomers to observe a celestial object and then read off its position using the markings on the relevant circles.Ptolemy and other Greek astronomers used the quadrant, a graduated quarter of a circle constructed to allow an observer to measure the altitude of celestial objects above the horizon. An astronomer would sight a target celestial object along one arm of the quadrant and then read off its elevation from a scale (from 0 to 90 degrees) with the help of a plumb line suspended from the center of the quarter circle. With this arrangement a celestial object just on the horizon would have an elevation of 0 degrees, while an object at zenith would have an elevation of 90 degrees.(will add more if i find out more)
What is an armillary sphere?
An armillary sphere is an instrument consisting of graduated metal circles used to represent the motions of celestial bodies around the earth.
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 is grid azimuth?
The azimuthal grid is a coordinate system that stays still while the stars move across it on the sky (the celestial sphere). It measures the altitude above the horizon and the azimuth (position along the horizon) of the celestial object at a particular time, for a particular place.
What is the grid azimuth?
The azimuthal grid is a coordinate system that stays still while the stars move across it on the sky (the celestial sphere). It measures the altitude above the horizon and the azimuth (position along the horizon) of the celestial object at a particular time, for a particular place.
What is the other name of celestial globe?
celestial globe is a physical model of celestial sphere
Is the imaginary sphere on which all objects in the sky seem to be located called the celestial sphere?
celestial sphere A+
Where on the Celestial Sphere are the plants?
Plants are not located on the Celestial Sphere. The Celestial Sphere is an imaginary sphere surrounding the Earth, used to map the positions of stars and celestial objects in the sky. Plants are living organisms found on Earth's surface.
