We all know that 'there are two sides to every coin' ; how many of us knew that Moon has two sides?
We all have been told that there is no water in the moon. But how many of us know that the moon has sea?
Moon has sea!
But, this sea is without water.
Earth doesn't have sides because it rotates on its axis and revolves around the Sun. Interestingly the satellite moon also rotate on its axis but one rotation takes nearly as much time as one revolution around Earth. Thus we, the inhabitants of earth, will see only one side of the moon always. This side which is visible to our eyes(always) is known as 'Near side'. The other side which is invisible to us is known a 'Far side' (in the picture).
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| Image courtesy: https://www.nasa.gov/mission_pages/LRO/news/lro-farside.html |
When we see the moon with our naked eyes in a full moon day, we see bright white light.
When we look the moon deeply we could find patches of darkness and brightness. The brightness are from highlands and the darkness is from low lands. These low lands are otherwise known as ‘Mare’ (derived from the word ‘marine’) or lunar sea. The beauty of the lunar sea is that it is only present in the side which we always look into the near side. The far side doesn’t have lunar sea.
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