Day 21: Celestial Spheres

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Today we got out the celestial spheres and started our discussion of celestial coordinates. Students learned how to describe the position of a star using right ascension and declination. Always impressed with how interested they are and how quickly they catch on. We set the spheres to today’s date and discussed the autumnal equinox this weekend and the sun’s position when it rises, is at solar noon, and when it sets.