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Understanding the Moon's Orbit and Phases: A Closer Look at Its 27.3-Day Cycle

The Moon orbits the Earth in an elliptical path, taking about 27.3 days to complete one revolution. Interestingly, the Moon rotates on its own axis in the same duration, which is why the same side always faces Earth. Its orbit is tilted 5 degrees relative to Earth's plane. As it moves through its phases, the Moon reflects sunlight, taking approximately 29.5 days to complete a full cycle of phases, including new moon to full moon. The dynamics of the Moon's motion cause it to "catch up" in its orbit relative to the Sun.

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Understanding the Moon's Orbit and Phases: A Closer Look at Its 27.3-Day Cycle

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  1. , Moon, Sun System

  2. Moon “appears” to go around from E W ` Really, rotates below it

  3. Orbit is an ellipse around 27.3days

  4. Moons’ orbit is NOT on the same plane as - tilted 5o

  5. Moon Rotates on it’s axis once every 27.3 days(Same as it’s Revolution) .: Same side of moon always faces

  6. Perigee When Moon Is Closest To Apogee When Moon Is Furthest From

  7. Moon Phases Moon Reflects Sunlight!

  8. It Takes 29.5 Days To Go From Phase To Same Phase… …Moon Has To “Catch Up” In It’s Orbit

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