An observer in San Luis Obispo, CA notices that the constellations Camelopardalis, Perseus, and Aries are just above the northeast horizon at 9:00 PM on August 31. Approximately how much time elapses until these three constellations will again be in the same position in the sky, just above the northeast horizon?
A. 12 hours.
B. 18 hours.
C. 24 hours.
D. 30 days.
Answer:C
An observer in San Luis Obispo, CA notices that the constellations Camelopardalis, Perseus, and Aries are just above the northeast horizon at 9:00 PM on August 31. Approximately how much time elapses until these three constellations will again be in the same position in the sky, just above the northeast horizon?
A. 12 hours. B. 18 hours. C. 24 hours. D. 30 days.