Look up to the sky on Wednesday evening and you might notice something quite extraordinary: the moon will shine a little brighter, hang a little larger and feel a little closer to home than usual.

That’s because we’re about to witness the closest supermoon of the year. Here's everything you ought to know before the phenomenon occurs:

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WHAT IS A SUPERMOON AND WHY SHOULD WE CARE?

A “supermoon” happens when a full moon coincides with the point in its orbit closest to Earth, known as perigee. The furthest point is called the apogee.

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Because the moon’s orbit is slightly oval-shaped rather than perfectly round, sometimes it’s nearer, sometimes farther away. When those two moments - full moon and perigee - align, we get a sup

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