Tracking the stars, Sun, and Moon to connect with the universe

摘要

The Earth continuously rotates and revolves in space.nHowever, it doesn’t feel that way, and we don’t usually thinknabout it. In this paper, we describe inexpensive devices thatntrack the positions of celestial objects in real time to makenEarth’s rotation and revolution concrete and vivid to thosenattached to points on its surface. Real-time knowledge ofnnotable celestial directions also facilitates a threedimensionalnawareness of our Solar System and galaxy.