The north celestial pole is not visible from any point on Earth's surface south of the equator. This is always true. The north celestial pole is the point in the sky directly above the Earth's north pole. Even though the north celestial poles moves about in the sky, it remains invisible everywhere in the southern hemisphere. The north celestial pole moves around in a circle in the sky as the Earth's axis wobbles. Each wobble takes about 23 thousand years.
From any part of the northern hemisphere.
From any part of the northern hemisphere.
From any part of the northern hemisphere.
From any part of the northern hemisphere.
At the north pole.
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The north celestial pole is at your local zenith when you stand at the earth's north pole, and
the south celestial pole is at your local zenith when you stand at the earth's south pole.
If you're standing exactly on the north Pole, then during the six months when the
sun never rises, Polaris ... the "Pole" star or "North" star ... makes a tiny circle
directly over your head once a day, about 1/3 of a degree from the North Celestial
Pole. Everything else in the sky circles the same point once a day, but in much larger
circles.
Technically, the celestial equator is visible in a clear sky from everywhere on earth.
As a practical matter, it's not visible from the north or south poles, because from the vantage point of the poles, the celestial equator exactly coincides with your horizon.
At the north pole.
From any part of the northern hemisphere.
If you are at the equator, the Earth's celestial pole would be at the northern horizon. However, because of atmospheric haze, you would not be able to see Polaris. Below about 5 degrees north, Polaris is not visible.
No, you would not be able to define the celestial poles and equator if the Earth did not rotate. Without rotation, there would be no poles, save for possibly magnetic poles.
That's the "Celestial Equator".
It's because the Earth's axis is tilted. Therefore the plane of the equator is tilted (at about 23.5 degrees) away from the plane of the Earth's orbit. Therefore the celestial equator is tilted away from the ecliptic.
The imaginary line around which the earth turns is its axis.
If you are at the equator, the Earth's celestial pole would be at the northern horizon. However, because of atmospheric haze, you would not be able to see Polaris. Below about 5 degrees north, Polaris is not visible.
Celestial Equator :)
No, you would not be able to define the celestial poles and equator if the Earth did not rotate. Without rotation, there would be no poles, save for possibly magnetic 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.
That's the "Celestial Equator".
It's because the Earth's axis is tilted. Therefore the plane of the equator is tilted (at about 23.5 degrees) away from the plane of the Earth's orbit. Therefore the celestial equator is tilted away from the ecliptic.
It's because the Earth's axis is tilted. Therefore the plane of the equator is tilted (at about 23.5 degrees) away from the plane of the Earth's orbit. Therefore the celestial equator is tilted away from the ecliptic.
the angular distance of a place north or south of the earth's equator, or of a celestial object north or south of the celestial equator, usually expressed in degrees and minutes
From Earth, a celestial object is any object outside or above Earth's atmosphere.
You can't - those things wouldn't exist. Both are defined in terms of Earth's rotation.
The celestial equator is an imaginary circle created by extending Earth's equator into space. Zenith is an imaginary point in the sky directly above and observer on earth.
Yes. For any point on Earth that is north of the equator, the north celestial pole is above the horizon.