Many people love to witness a full moon. But did you know that during a supermoon the size and brightness can be even greater?
During a supermoon, the Moon we know is 14% larger and 30% brighter. If you have not yet witnessed this astronomical phenomenon, in the northern hemisphere you will be able to observe it every February 19 and 20.
As this event takes place during the end of winter, when there are still ventistas and frosts, NASA has given this moon the nickname of: Snow Supermoon.
Why are supermoon produced?
A superlune is not among the strangest phenomena that can occur in space. However, it must be admitted that the beauty of this event always demands special attention. Scientific observation has helped to determine the reasons why a supermoon may appear.
We know from all life that the Moon revolves around the Earth. But we do not always bear in mind that this neighbouring satellite does not exactly trace a circumference around our planet, but moves in the form of ellipses. Therefore, at some points of its journey the Moon is closer to the Earth, and at others farther away.
For lunar phases it is also necessary to consider not only the position of the Moon with respect to the Earth, but also the position of the Moon with respect to the Sun. Thus, the Moon is full when it is aligned on the opposite side of the Earth, taking the sun as its starting point.
In order to understand why a supermoon is presented, it is enough to specify that on some occasions two quite particular situations come to coincide, giving rise to that extraordinary white sphere that we see in the night sky.
For a supermoon to appear, a full moon must be in the perigee, that is, at the point of the ellipse closest to the Earth. Science has estimated that this distance is about 363,300 kilometers.
What can we observe during supermoon?
As the Moon is closer to the Earth, when it is in its full moon phase, what we can appreciate is a much larger dimension than usual.
Perhaps for some that extra size will go unnoticed, but the brightness of a supermoon can hardly be ignored. In this respect, NASA has explained that this phase of the moon is much brighter because it reflects the sun’s rays with greater intensity.
Nasa has also clarified that the significant increase in size of a supermoon does not translate into an increase in high tides or tidal waves. So during a super moon you won’t see any disasters or anything out of the ordinary.
Now that you know what a supermoon is, you can sit in front of your window to capture the special moment when one appears in front of you in the night vault.