(Originally the moon spun faster, but slowed down to reach this curious steady state). Because the moon orbits the Earth in exactly the same amount of time it takes for the moon to complete a turn, the same side of the moon is always facing the Earth. The 'traditional' moon count most people are familiar with stands at 290: One moon for Earth two for Mars 95 at Jupiter 146 at Saturn 27 at Uranus 14 at Neptune and five for dwarf planet Pluto. When we watch the phases of the moon we are actually watching the transition of moon-day to moon-night and vice-versa. Follow the sun and moon's movements on our maps and Apps. However, the difference is that It takes 28.5 days for the moon to spin about its axis. Worldwide times for sunrise, sunset, eclipses of the Sun and Moon, moon phases, moonrise & moonset, equinoxes, solstices. We experience day when we are on the half of the Earth facing the Sun, and night once we have been spun around to the other side. Answer The transition from day to night is caused by the spinning of the Earth about its axis.
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