We’re already in October, but the first supermoon of 2025 will finally rise in the skies of the Chicago area on Monday night.

In fact, Monday night’s full moon will be the first of four consecutive “supermoons” to be visible, stretching all the way into the beginning of 2026, according to NASA.

Here’s what you need to know about the phenomenon.

What is a “supermoon”?

According to NASA, a “supermoon” occurs when the full moon coincides with the moon’s closest approach to the Earth in its orbit, known as its perigee.

Since the moon’s orbit is elliptical, it reaches its perigee and its apogee each time it revolves around the planet, and the “supermoon” coincides with that perigee on multiple occasions in a row.

While the term “supermoon” isn’t an official term according to NASA, it’s

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