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Long, long ago, people noticed that every so often it became warm enough to plant things, and later to harvest them. They noticed that after this, it got colder and colder for a long time, then warmed up again until it was once more time to plant things. They called this period of time the equivalent of "Year". So, a year is the time taken by the Earth to make one full rotation on itself.
What else can I help you with?
How long does it take for neptune to rotate around the sun once?
165 (Earth) years.
How long the moon takes to orbit the earth and the earth to orbit the sun?
It takes 27.3 days for the Moon to complete one full orbit around the Earth. how long does it take for the earth to rotate around the sun? It takes exactly 365 and a quarter days for the earth to orbit around the sun once.
How would the moon appear to an observer on earth if the moon did not rotate?
it would still appear to rotate
How long it takes for the moon to rotate once?
The moon takes about 27.3 days to rotate once on its axis. This rotation period is almost the same as its orbital period around the Earth, which is why we always see the same face of the moon from Earth.
Does the earth and the moon revolve and rotate differently?
because or the gravity of the moon and earth
Does the atmosphere rotate with the Earth?
No, the atmosphere does not rotate with the Earth. The Earth's rotation causes the atmosphere to move with it, but the atmosphere itself does not rotate independently.
How long for it to rotate on axis for mercury?
It takes about 58.6 Earth days to rotate:)
How long does it take for the moon to rotate the earth?
27.3
How long earth use to rotate the sun?
2 hours
How long does its takes to the earth to rotate to its axis?
24 hours.
How long does Saturn take to rotate in Earth years?
100
How long does it take for each planet to rotate around itself?
One day
How long does Jupiter take to rotate in a yeaer?
it exactly takes 4,331 earth days for Jupiter to rotate in a year.
How long it take to Eris rotate on its axis?
Eris takes approximately 550 Earth years to rotate on its axis.
How long it does take the moon to rotate?
Earth's moon does rotate on it's axis but it does it once each orbit of the Earth: every 27.3 days .
How long does a rotation around earth take?
It Takes One Day for the earth to rotate on its axis.
How long does it take earth to rotate on it's axis?
1 year
