The north and south celestial poles are two imaginary points and therefore cannot be "discovered".
The celestial pole is the point in the sky directly above the Earth's North or South Pole. The North Celestial Pole is located near the North Star (Polaris), while the South Celestial Pole does not have a bright star near it. Stars appear to rotate around these points due to Earth's rotation.
The movement of the celestial pole is caused by Precession of the Earth's rotational axis.
The celestial pole is directly above Earth's geographic poles, so to place a celestial pole at your zenith you would need to be at either the North Pole or the South Pole. At these locations, the celestial pole would be directly overhead, making it appear as if the axis of Earth's rotation extended into the sky.
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.
Yes. For any point on Earth that is north of the equator, the north celestial pole is above the horizon.
No. Argenrtina is entirely south of the equator, so the north celestial pole is not visible.
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.
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.
At the south pole.
The Celestial Poles are the infinite extension of the North and South Poles from the Earth into space. The North Star or Polaris, is within 1 degree of the North Celestial Pole. There is no equivalent star for the South Celestial Pole.
The earth's axis of rotation points directly at the celestial pole.
At 45 degrees north latitude, the north celestial pole appears 45 degrees above the northern horizon. At 45 degrees south latitude, the south celestial pole appears 45 degrees above the southern horizon.