This December 3 will be the last astronomical event of the year known as supermoon: the Moon will approach Earth more than normal and will be appreciated 14 percent larger and 30 percent brighter than usual. It is an event that the human being has observed since the Middle Ages.

Every 27.55 days the Moon approaches the Earth, but only two or three times a year it reaches its closest point to the planet, which is called perigee. When it coincides with the full Moon, the supermoon can be observed.

What is the supermoon?

The phenomenon is caused by the coincidence between the lunar phases (new moon, full moon) and the transition cycle in which the moon goes around the earth (elliptical orbit) when the two occur at the same time the moon is approaching more to Earth and can be better appreciated.