Are the stars always in the same position relative to earth?

[jehen]

To one another yes. But snce our vantage point changes as the earth rotates and changes throughout the course of a year as the earth orbits the sun. We see a different collection of stars at different times of year. If you are at mid-latitudes at midnight on July 1 you are looking into the opposite direction of the night sky as you did at midnight on Jan 1, so you see different stars. But on any given day and time of the year, those are the same stars in the same place in the sky as they were on the same date and time last year and will be next year.