You view the night sky for a period of 1 hour. What changes during this hour?

Question

Quizplus · Accepted Answer

The right ascension of the star at your zenith changes because as the Earth rotates, different stars come into the zenith position for any given location, altering the right ascension of the star directly overhead. Right ascension and declination of individual stars (like Castor or Pollux) do not change noticeably over such a short period since these are essentially fixed coordinates on the celestial sphere. The position of Polaris also remains nearly constant relative to an observer's local horizon due to its proximity to the North Celestial Pole.

You View the Night Sky for a Period of 1