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If earth did not rotate could you define the celestial poles and celestial equator?
Wiki User
∙ 9y ago
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.
Wiki User
∙ 9y ago
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If you were standing on the earth's equator where would you look to see the north celestial pole Could you see it from Australia?
At the equator, the celestial north pole would be north, just at the horizon. In the southern hemisphere, for instance in Australia, the north celestial pole would be north, and as many degrees BELOW the horizon as your latitude. For instance, if you are 10 degrees south of the equator, the celestial north pole would be 10 degrees below the equator.On the other hand, for people in the southern hemisphere, the celestial SOUTH pole would be ABOVE the horizon; this same pole is below the horizon for anybody in the northern hemisphere.
Where would you go on earth if you wanted to be able to see both the north celestial pole and the south celestial pole at the same time?
To see both the north celestial pole and the south celestial pole at the same time a person would need to standing at the equator. The atmospheric haze may interfere near the horizon may obstruct the view.
What is a celestial globe?
Celestial globes were used to represent the stars and constellations of the night sky and record their positions with respect to each other and a co-ordinate system. They were also used as analogue computers to resolve problems involving the stars. In the most common form of celestial globe, a number of stars were marked on a sphere, and the constellation figures delineated. The sphere was mounted by its poles (corresponding to the celestial poles) on a metal circle, or meridian. The ecliptic and equator were marked and divided (into degrees) on the globe, to measure celestial longitude and right ascension. Declination was measured using divisions marked on the meridian. The globe was placed in a stand, which included a broad horizontal band, known as the horizon. The elevation of the pole of the globe above the horizon could be varied to adjust for the user's latitude. Once so adjusted, the rotation of the globe was analogous to the (apparent) diurnal rotation of the stars, for that latitude. Since the ecliptic and equator are marked, the globe could be used to work out the times of rising and setting of the stars, or the time of their culmination (the time when an object reaches its highest point in the sky). A celestial globe from the Whipple Museum.
Where on Earth could you see all the constellations rise and set?
Somewhere along the equator...
What time of the day does the sun cross the celestial equator?
Actually at 23.5 degrees it is never overhead because the Earth's axial tilt is only 23.44 degrees. However, for the purposes of this answer let us round up to 23.5 degrees. The Tropic of Cancer is located at 23.5° North of the equator. The Tropic of Capricorn lies at 23.5° South of the equator. There is one day each year when the Sun is overhead (90 degrees) at these latitudes. In the North this is at the Summer Solstice in June (around the 21st) each year and in the South it is at the Winter Solstice in December (around the 21st) each year.
If Earth did not rotate could you still define the celestial poles and celestial equator?
You can't - those things wouldn't exist. Both are defined in terms of Earth's rotation.
Where would you go on earth to see a celestial pole at your zenith?
A person would have to visit the equator for the celestial equator to pass through your zenith or one would have to be at the south pole for the south celestial pole to be at your zenith. You would not see this, but you could note it.
If you were standing on the earth's equator where would you look to see the north celestial pole Could you see it from Australia?
At the equator, the celestial north pole would be north, just at the horizon. In the southern hemisphere, for instance in Australia, the north celestial pole would be north, and as many degrees BELOW the horizon as your latitude. For instance, if you are 10 degrees south of the equator, the celestial north pole would be 10 degrees below the equator.On the other hand, for people in the southern hemisphere, the celestial SOUTH pole would be ABOVE the horizon; this same pole is below the horizon for anybody in the northern hemisphere.
Why can you see the sky from the north pole to the equator when you can only see a few miles of water to the horizon and you can't see airplane tracks that far away - I do not understand this?
What, exactly, did you see? - You can basically see anything for which you have line-of-sight, that is, if a straight line between the object and you doesn't go below the horizon. I think the questioner may be mixing up the "celestial equator" and the Earth's equator. The celestial equator is the "projection" of the Earth's equator onto the sky. It a great distance away, effectively at infinity. Let's consider the difference between the two equators. Normally, you can see only a few miles to the horizon, depending on your height above your surroundings. Obviously you can't see the Earth's equator from the North Pole. Things above ground such as airplane tracks can be seen when they are further away than the horizon, but still your visibility is limited by the Earth's surface. However, from the North Pole, you can see as far south in the sky as the celestial equator. So, you could just about see a star in that part of the sky. The stars are light years away, of course. Imagine you are near a distant star on the celestial equator. In theory, at that distance, you could see one full hemisphere of the Earth from pole to pole. So, someone at the Earth's North Pole could see that star. To sum up: it's because the stars are so far away that you can see a star on the celestial equator from the North Pole.
Why aren't aliens used in the real world?
The term alien is loaded, it could define something celestial, or from different country, from out of earth or even not belonging to a particular place .
What observations could an observer at the Earth's equator make to determine the declination of the Sun?
Since both the Sun and Moon were observed at their respective angles from the ... An observer in the Chaco point would see the Moon at the left of the Sun, and ... 10 degrees from the horizon, then he is about 10 degrees north of the equator.
Where would you go on earth if you wanted to be able to see both the north celestial pole and the south celestial pole at the same time?
To see both the north celestial pole and the south celestial pole at the same time a person would need to standing at the equator. The atmospheric haze may interfere near the horizon may obstruct the view.
Astronomers measure what kind of ascension eastward from the vernal equinox?
The question could have been written more clearly, I think.Anyway, the answer is "right ascension".That's one of the coordinatesused to define the positionof an objectin the sky on the "celestialsphere".It is angular distance, measuredeastward from the Vernalequinox, along the "celestialequator".
What generalization could you make about the location of earths landmasses relative to the equator and the prime meridian?
The majority of earths landmasses are north of the equator. The Northern Hemisphere[1] is the half of a planet that is north of the equator-the word hemisphere literally means 'half sphere'. It is also that half of the celestial sphere north of the celestial equator. Earth's northern hemisphere contains most of its land area and most of its human population (about 90%). Sources: My studies when I was forced to gather for a mad scientist who gave me wings. I live in Montana in the mountains and there are wolves after me.
What would happen if the earth rotated 400 times every second?
It can't rotate that fast, since the linear speed at the equator would exceed the speed of light by far. The fastest it could rotate in theory would be about 7 times a second. In that case, it would break apart immediately.
What is a celestial globe?
Celestial globes were used to represent the stars and constellations of the night sky and record their positions with respect to each other and a co-ordinate system. They were also used as analogue computers to resolve problems involving the stars. In the most common form of celestial globe, a number of stars were marked on a sphere, and the constellation figures delineated. The sphere was mounted by its poles (corresponding to the celestial poles) on a metal circle, or meridian. The ecliptic and equator were marked and divided (into degrees) on the globe, to measure celestial longitude and right ascension. Declination was measured using divisions marked on the meridian. The globe was placed in a stand, which included a broad horizontal band, known as the horizon. The elevation of the pole of the globe above the horizon could be varied to adjust for the user's latitude. Once so adjusted, the rotation of the globe was analogous to the (apparent) diurnal rotation of the stars, for that latitude. Since the ecliptic and equator are marked, the globe could be used to work out the times of rising and setting of the stars, or the time of their culmination (the time when an object reaches its highest point in the sky). A celestial globe from the Whipple Museum.
Is the equator a polar region?
No, the equator could be said to be the opposite of the Polar regions.
