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Understanding the Phases of the Moon

May 8, 2025

Moon Phases Explained

New Moon

  • Occurs when the Moon is next to the Sun.
  • The bright side faces away from Earth, and only the dark side is visible to us.

Visibility of the Moon

  • Moon becomes visible as it moves away from the Sun's glare.
  • Rises around 50 minutes later each day.
  • After New Moon, it initially rises just after the Sun, making it hard to see.
  • As the Sun sets, a crescent Moon becomes visible.

First Quarter Moon

  • Occurs when the Moon is 90 degrees from the Sun as seen from Earth.
  • Half of the Moon's face is illuminated.
  • Marks one-quarter completion of the Moon's orbit around Earth.
  • Rises around midday and can be seen in the afternoon sky.

Full Moon

  • Occurs about two weeks after New Moon.
  • The Moon is on the opposite side of Earth from the Sun.
  • The side facing Earth is fully lit.
  • The Moon is visible all night long.

Third Quarter Moon

  • Appears about one week after Full Moon.
  • Rises around midnight.
  • Opposite orientation of illuminated half compared to First Quarter.

Waning Crescent

  • A few days after the Third Quarter.
  • Moon appears as a thin crescent just before sunrise.
  • Eventually becomes invisible due to the Sun's glare, completing the cycle back to New Moon.

Lunar Cycle

  • The complete lunar cycle spans just over four weeks.

Observation Notes

  • In the Southern Hemisphere, the Moon appears inverted and moves in the opposite direction.

Engagement

  • Viewers are invited to share their favorite Moon phase.
  • Encouraged to subscribe for future videos and live streams of eclipses.