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单词 celestial pole
例句 celestial pole
For most observers in the Northern Hemisphere, the Great Bear is close enough to the north celestial pole that it never sets below the horizon, and it rotates around the North Star once a day. 5 famous constellations that (almost) anyone can find 2023-08-23T04:00:00Z
This image is the result of an 11-day-long observation with the Hubble Space Telescope of a tiny region of sky, located toward the constellation Fornax near the south celestial pole. Astronomy 2016-10-13T00:00:00Z
Through the use of long exposures, the trails depict the rotation of the Earth on its axis centring on the north celestial pole, the sky moving anti-clockwise around this point. The Best Astronomy Pictures of the Year Are Just Incredible 2017-07-28T04:00:00Z
That’s the year when Polaris will be closest to its celestial pole. Deserts and dynamite: my journey to the cosmic heart of land art 2016-05-11T04:00:00Z
The title of the second-season premiere is “Axis Mundi,” a place that, in certain belief systems, acts as a celestial pole, the connection of heaven and Earth, where messages may ascend and disseminate. 'The Leftovers' recap: 'I didn't try hard enough' 2015-10-05T04:00:00Z
It is a popular idea with some people that the Pole Star is the nearest of all the stars to the celestial pole. Astronomical Curiosities Facts and Fallacies 2012-03-27T02:00:18Z
It lies halfway between the celestial poles, just as Earth’s equator lies halfway between our planet’s poles. Astronomy 2016-10-13T00:00:00Z
But, Polaris just also happens to be the closest bright star relative to the north celestial pole. Most Popular Skywatching Misconceptions Explained 2011-11-14T21:45:00.213Z
Stars in an area around the north celestial pole, whose limits vary with the position of the observer never set for an observer in the northern hemisphere. Astronomical Lore in Chaucer 2011-10-13T02:00:42.860Z
It is everywhere 90� distant from the celestial poles, which coincide with the extremities of the earth's axis, supposed to be produced to meet the heavens. The New Gresham Encyclopedia Volume 4, Part 2: Ebert to Estremadura 2011-04-14T02:00:56.200Z
In astronomy, the “celestial equator” is the name given to the great circle in which the plane of the terrestrial equator intersects the celestial sphere; it is consequently equidistant from the celestial poles. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 7 "Equation" to "Ethics" 2011-02-27T03:00:31.973Z
This long-exposure photo shows trails left by stars as a result of the apparent rotation of the celestial sphere around the south celestial pole. Astronomy 2016-10-13T00:00:00Z
The angle through the celestial pole, between these two positions, is double the polar distance. Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 7 "Arundel, Thomas" to "Athens"
Yes, Bell, the Pole is not always exactly in the same place; formerly the North Star was farther from the celestial pole than it is now. The Voyages and Adventures of Captain Hatteras
It is the angle at the celestial pole between the meridian intersecting any given point and the meridian intersecting the center of the sun. Lectures in Navigation
Not satisfied with the Northern hemisphere, a branch has been established in Peru, in which the observatory's methods of research have been extended to the south celestial pole. American Men of Mind
First of all, notice that Earth’s axis is pointing at the celestial poles, so these two points in the sky do not appear to turn. Astronomy 2016-10-13T00:00:00Z
This motion of the celestial pole results in a corresponding revolution of the equinox around the celestial sphere. Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 7 "Arundel, Thomas" to "Athens"
With one hand Hatteras was holding it; with the other he was pointing to the zenith, the celestial pole. The Voyages and Adventures of Captain Hatteras
These three bright crystal laws of life were to him like pointer stars guiding a traveller's eye to the celestial pole by which he steers. The Life of William Ewart Gladstone, Vol. 1 (of 3) 1809-1859
Nutation, name given to a slight oscillatory movement noticeable in the celestial pole of the earth, due to the latter not being a perfect sphere. The Nuttall Encyclopædia Being a Concise and Comprehensive Dictionary of General Knowledge
The celestial equator, 90° from the celestial poles, would lie along your horizon. Astronomy 2016-10-13T00:00:00Z
In the new system, the sphere of the fixed stars no longer revolved diurnally, the earth rotating instead on an axis directed towards the celestial pole. Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 7 "Arundel, Thomas" to "Athens"
What is the altitude of the north celestial pole in the sky from your latitude? Astronomy 2016-10-13T00:00:00Z
If you were to drive to some city south of your current location, how would the altitude of the celestial pole in the sky change? Astronomy 2016-10-13T00:00:00Z
To the unaided eye, the brightest of these three stars is Alpha Centauri, which is only 30○ from the south celestial pole and hence not visible from the mainland United States. Astronomy 2016-10-13T00:00:00Z
As you watched the stars during the course of the night, they would all circle around the celestial pole, with none rising or setting. Astronomy 2016-10-13T00:00:00Z
Continuing his journey towards the south, the north celestial pole sinks below the horizon; the south celestial pole rises above it; or to speak more exactly, the zenith of the observer approaches that pole. Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 7 "Arundel, Thomas" to "Athens"
If we extend this imaginary line outward from Earth, the points where this line intersects the celestial sphere are called the north celestial pole and the south celestial pole. Astronomy 2016-10-13T00:00:00Z
If you stood at the North Pole of Earth, for example, you would see the north celestial pole overhead, at your zenith. Astronomy 2016-10-13T00:00:00Z
The celestial poles, being 90° from the celestial equator, must then be at the north and south points on your horizon. Astronomy 2016-10-13T00:00:00Z
For an observer at 38° N latitude, the south celestial pole is 38° below the southern horizon and, thus, never visible. Astronomy 2016-10-13T00:00:00Z
Were the position of the latter invariable, the celestial pole would move round it in a circle. Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 7 "Arundel, Thomas" to "Athens"
For those in the continental United States and Europe, the north celestial pole is neither overhead nor on the horizon, but in between. Astronomy 2016-10-13T00:00:00Z
In San Francisco, for example, where the latitude is 38° N, the north celestial pole is 38° above the northern horizon. Astronomy 2016-10-13T00:00:00Z
As Earth turns, the whole sky seems to pivot about the north celestial pole. Astronomy 2016-10-13T00:00:00Z
At this particular time in Earth’s history, there happens to be a star very close to the north celestial pole. Astronomy 2016-10-13T00:00:00Z
When at the pole his zenith coincides with the celestial pole, and as the earth revolves on its axis, the heavenly bodies perform their apparent diurnal revolutions in horizontal circles round the zenith. Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 7 "Arundel, Thomas" to "Athens"
On the other hand, stars within 38° of the south celestial pole never rise. Astronomy 2016-10-13T00:00:00Z
Recall from the section on celestial poles and the celestial equator that the north celestial pole is just the projection of Earth’s North Pole into the sky. Astronomy 2016-10-13T00:00:00Z
And the height of the North Star—the star nearest the north celestial pole—decreases as a traveler moves south. Astronomy 2016-10-13T00:00:00Z
The north celestial pole appears at an altitude above the horizon that is equal to the observer’s latitude. Astronomy 2016-10-13T00:00:00Z
His zenith is then in the equator and the celestial poles are in the North and South horizon respectively. Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 7 "Arundel, Thomas" to "Athens"
If the north celestial pole is wobbling around, then Earth itself must be doing the wobbling. Astronomy 2016-10-13T00:00:00Z
The direct evidence of our senses supports a geocentric perspective, with the celestial sphere pivoting on the celestial poles and rotating about a stationary Earth. Astronomy 2016-10-13T00:00:00Z
Hipparchus carried out many astronomical observations, making a star catalog, defining the system of stellar magnitudes, and discovering precession from the apparent shift in the position of the north celestial pole. Astronomy 2016-10-13T00:00:00Z
Identify Polaris, the North Star, which lies very close to the north celestial pole. Astronomy 2016-10-13T00:00:00Z
If you are in the Southern Hemisphere, answer this question for the south celestial pole, since the north celestial pole is not visible from your location. Astronomy 2016-10-13T00:00:00Z
Halfway between the celestial poles, and thus 90° from each pole, is the celestial equator, a great circle on the celestial sphere that is in the same plane as Earth’s equator. Astronomy 2016-10-13T00:00:00Z
So Polaris, the star near the north celestial pole, has a declination of almost +90°. Astronomy 2016-10-13T00:00:00Z
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