Monday, 31 December 2012

Moony Business

The Moon's polar circumference is 27.3% the size of the Earth's polar circumference.

The Moon orbits the earth every 27.3 Earth days and turns 10920.8 km at the equator every 27.3 days.  This equates to a speed of 400 km/h.  The Earth turns at 100 times the rate and travels 40,000 km per rotation.  Conversely the Sun is 400 times larger than the Moon and 400 times further away from Earth, which is why we get to see such great eclipses.

Earth turns 366 times each orbit of the sun, and is 366% the measurement of the moon at the polar circumference.  The moon orbits earth 366 times every 10,000 days.

There are 109.2 Earth diameters across the Sun's diameter.
There are 109.2 Sun diameters between the Earth and the Sun when it is at the furthest reach of it's orbit around the sun.
There are 109.2 x 100 km across the circumference of the Moon.

Please feel free to check these sums and come to your own conclusions :).

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