You would have to be somewhere within the tropics. It is only there (South of the Tropic of Cancer and North of the Tropic of Capricorn) that the sun is ever directly overhead. The zenith is the point in the sky exactly and directly overhead for any given observer.
Less than a degree from the zenith.
No, zenith and the North Star are not the same. The zenith is the point directly above an observer, whereas the North Star (Polaris) is a star located near the celestial North Pole in the Northern Hemisphere, making it useful for navigation.
If you were standing at Earth's North Pole, the North Star, also known as Polaris, would be located directly in the zenith, or straight overhead. This is because Polaris is situated very close to the celestial north pole in the night sky.
That's the observer's 'zenith'. Since it's referenced to the "observer's head", each observer has a different zenith.
The star closest to the zenith depends on your location and the current time, as the location of stars in the sky changes throughout the night and with your position on Earth. The star that is currently at the zenith will be the one directly overhead in your local sky.
Less than a degree from the zenith.
It is called Zenith.
No, zenith and the North Star are not the same. The zenith is the point directly above an observer, whereas the North Star (Polaris) is a star located near the celestial North Pole in the Northern Hemisphere, making it useful for navigation.
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.
If you were standing at Earth's North Pole, the North Star, also known as Polaris, would be located directly in the zenith, or straight overhead. This is because Polaris is situated very close to the celestial north pole in the night sky.
That's the observer's 'zenith'. Since it's referenced to the "observer's head", each observer has a different zenith.
57.5 degrees north of your zenith.
The star closest to the zenith depends on your location and the current time, as the location of stars in the sky changes throughout the night and with your position on Earth. The star that is currently at the zenith will be the one directly overhead in your local sky.
Near the zenith, i.e., the highest point in the sky.
If you are at a location with a latitude of 10 degrees north, a star with a declination of 10 degrees would be located directly overhead, at your zenith. This means the star is in the same plane as your latitude, making it the highest point in the sky relative to your position.
Polaris, otherwise known as the pole star or the north star, is very close to being straight up from the north pole. If you were standing right at the north pole, Polaris would be almost exactly at your zenith-- straight up.
"At zenith" means directly above your head - so high that it can't go any higher.