Instead of star trails, you would see:
* A single, unchanging image of the stars: The stars would remain in their exact positions throughout the three-hour exposure.
* No blurring or streaking: Since there's no rotation, the light from each star would fall on the same spot on the film or sensor throughout the entire exposure.
* The North Star would appear in the center: As the celestial pole, the North Star is the one point in the sky that does not appear to move due to Earth's rotation.
Why this happens:
The apparent movement of stars across the sky is caused by Earth's rotation. As our planet spins, we see the stars arc across the sky, with the North Star appearing stationary as it's directly above the axis of rotation. Without this rotation, the stars would remain fixed in their positions relative to one another, creating a static image.
Additional points to consider:
* The sun's movement: The sun's apparent movement across the sky would still occur due to Earth's orbit around it. This would result in the sun rising and setting within the three-hour period, potentially impacting the brightness of the stars in the photograph.
* Other celestial objects: Other celestial objects like planets would also appear stationary in their positions, but their relative positions might change slightly over the three-hour period due to their own movements.
In summary, a three-hour time exposure photograph of stars without Earth's rotation would be a very different experience. Instead of captivating star trails, you would see a static, unchanging image of the stars in their true, fixed positions.
