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The Moon takes 27.3 days to go around the Earth once, but the time from new moon to new moon is 29.5 days. This is because while the Moon is going around the Earth, the Earth keeps moving going around the Sun. By the time the Moon has made exactly one orbit, the Earth has moved another 27.3 days along in its orbit, and it takes the Moon another 2.2 days to get back into the same relative arrangement of Sun-Moon-Earth.

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14y ago
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4mo ago

The Moon's revolution around the Earth takes about 27.3 days, while the Moon phase cycle (from new moon to new moon) is about 29.5 days long because Earth is also moving in its orbit around the Sun. This results in the Moon needing to travel a bit further to complete its phase cycle compared to its revolution around Earth.

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Q: Why is the moon phase cycle longer than the Moon's revolution around earth?
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Related questions

Is it true the cycle of tbe phases takes about two days longer than the moon revolution around earth?

Yes, the cycle of the Moon's phases (from new Moon to new Moon) is about 29.5 days, which is slightly longer than the Moon's orbital period around Earth, which is about 27.3 days. This difference is because Earth is also moving in its orbit around the Sun while the Moon is orbiting Earth.


Is it true the cycle of tbe phases takes about two days longer than the moon revolution around earth false?

Yes, it's true. The difference is 2.21 days.


Why is the moon's lunar cycle longer than it takes the moon to complete one revolution?

its the way the earth is


Cycle solstice rotation revolution Which of these words means 'orbit'?

Revolution. The Earth can be said to orbit the sun or to revolve around it.


If the revolution of the moon around Earth slowed down how long would the length of one cycle of the moon's phases most likely be?

If the revolution of the moon around Earth slowed down, the length of one cycle of the moon's phases would most likely increase. This is because the time it takes for the moon's phases to complete a cycle is directly related to its orbital period around Earth. A slower revolution would result in a longer period for the phases to cycle through.


What causes month?

the moons cycle i think


How long does it tke for the moon to go around the earth?

A full revolution around Earth takes about 27 1/2 days. A full cycle (from full moon to full moon for example) takes a bit longer: 29 1/2 days.


What is the moons cycle of changes called?

it is called the phases of the moon


How long does the moon take to complete both of these motion?

One revolution of the Moon around the Earth takes about 27.5 days. Note that a full cycle, from full Moon to full Moon, is a bit longer, about 29.5 days.One of the Moon's rotation around its axis is also 27.5 days.


Do other planet moons go through a lunar cycle?

Yes they do.


How long is 30 moons?

normally when people are talking about a "moon" they mean a moon cycle which is how long it takes for the moon to do all its phases and is around 29.5 days to complete. So 30 moons would take around 8850 days aka 290.76 months aka 24.23 years


Which Planet has 17 moons?

Uranus has 27 known moons, making it the planet in our solar system with the most moons.