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What does the Horizon great circle on the celestial sphere represent?
A circle through the Earth's sphere perpendicular to the observer's latitude
Indian astronomers recognized that earth?
India astronomers recognized that the earth was a sphere.
What does the earth look like as it goes around the sun?
Earth looks like a sphere - a round ball.
When astronauts enter earth gravity how close are they?
Astronauts do not completely leave the earth's gravity, they only enter a state of free fall orbiting the earth causing weightlessness. The astronauts that went to the moon technically do not leave the earth's gravity, they simply get close enough that the moon's gravity has a stronger effect than that of the earth's gravity. The distance at which this happens is called the sphere of influence. The moon's sphere of influence is approximately 66 000 km, this would be about 315 000 km away. In the Sun earth system, the earth's sphere of influence is 925 000 km. Therefore if you are within 919 000 km of the earth's surface, it's gravity will be the primary gravitational force experienced. The only exception is if you come within 64 500 km of the moon's surface.
What shape are the Earth Sun and Moon?
All three are globe-like due to internal gravitation forces. Though the Earth is an Oblate Spheroid, and not a perfect sphere.
The place where the extended axis of the Earth would touch the celestial sphere is called the celestial what?
That is also called the axis; the "end-points" of this axis are called the celestial poles.
Where might you find the celestial sphere celestial equator and celestial poles?
These are imaginary locations in the sky. The "celestial sphere" is a blanket term for everything beyond the Earth. The celestial equator is the plane of the Earth's equator extended out into space. The "celestial poles" are extensions of the north pole and south pole into space. It's sometimes convenient to describe objects out in space with reference to terrestrial coordinates.
Where is the celetial pole?
either of the two points in the celestial sphere where the earth's axis, if extended, would intersect
An imaginary sphere that surrounds the earth?
The imaginary sphere that surrounds the Earth is called the celestial sphere. It is an abstract sphere of infinite radius upon which all celestial objects are assumed to lie. It provides a convenient reference frame for locating celestial objects in the sky.
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.
What is the sphere that surrounds the earth?
celestial sphere
What is the imaginary sphere on which all objects in the sky seem to be located?
The imaginary sphere is called the celestial sphere. It is used in astronomy to track the apparent movements of celestial objects as if they were projected onto the inside of a sphere surrounding the Earth.
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.
What is the imaginary sphere created by scientists that surrounds the earth?
The imaginary sphere created by scientists that surrounds the Earth is called the celestial sphere. It is used as a way to map and locate stars and other celestial objects in the sky as they appear from Earth's perspective. The celestial sphere helps astronomers describe the positions and movements of objects in the night sky.
What is the largest sphere of the earth?
The largest sphere that can fit around Earth is the geocentric celestial sphere. This imaginary sphere has Earth at its center and encompasses all celestial objects visible in the sky.
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.
