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The eight Moon phases: π New: We cannot see the Moon when it is a new moon. π Waxing Crescent: In the Northern Hemisphere, we see the waxing crescent phase as a thin crescent of light on the right. π First Quarter: We see the first quarter phase as a half moon.
It takes the Moon 27.3 days to make a complete orbit around the Earth, but because the Earth is moving around the sun at the same time, it takes the moon 29.5 days to go through its eight different ‘phases’ – a lunar month. Zoom in for a closer look!
The moon goes through 8 major phases. A new moon is when the Moon cannot be seen because we are looking at the unlit half of the Moon. The new moon phase happens when the Moon is directly between the Earth and Sun. A solar eclipse can only happen at the new moon.
From new moon through waxing crescent, quarter, gibbous, full moon, and waning back to new moon again, come learn about the cycle of shapes the moon takes (or rather, appears to take) as it ...
Learn about what causes the phases of the Moon it orbits the Earth and what a lunar month is with this KS3 Physics guide for BBC Bitesize.
The Moon’s four principal phases occur when the Moon’s ecliptic longitude is at an angle to the Sun, as viewed from our planet, at 0°, 90°, 180°, and 270°, respectively. All of these phases appear at slightly different times at different locations on Earth.
These changes in the Moon's appearance from our view on Earth are called moon phases. This graphic shows all eight moon phases we see as the Moon makes a complete orbit of Earth about every four weeks.