The moon goes through different phases depending on its position relative to the Earth and the Sun. The two main categories of moon phases are:
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Waxing Phases: These are the phases when the visible portion of the moon is getting bigger. This includes:
- New Moon: The moon is between the Earth and the Sun, and the side that is illuminated is facing away from us.
- Waxing Crescent: A small sliver of the moon becomes visible.
- First Quarter: Half of the moon is illuminated (the right half in the northern hemisphere).
- Waxing Gibbous: More than half is illuminated, but it is not yet full.
- Full Moon: The entire face of the moon is illuminated.
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Waning Phases: These are the phases when the visible portion of the moon is getting smaller. This includes:
- Waning Gibbous: The moon starts to decrease in illumination, but more than half is still visible.
- Last Quarter: Half of the moon is illuminated (the left half in the northern hemisphere).
- Waning Crescent: A small sliver of the moon remains visible as it approaches the new moon phase.
These cycles repeat approximately every 29.5 days.