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If you step outside Sunday night or very early Monday morning, you might notice the moon is looking bigger and brighter than usual.

Bigger in fact, than it has appeared at any point in the last 68 years, say scientists.

This month’s supermoon, the penultimate of the year, will be the biggest so far of the 21st century.

We won’t see its like again until 2034, so make sure you get a look.

A “supermoon” occurs when the moon becomes full on the same days as its perigee, which is the point in the moon’s orbit when it is closest to Earth.

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Want to catch a glimpse of this moon without even stepping outside your home (although, we recommend you check it out in person). Slooh is offering a live broadcast starting Nov. 13 at 8 p.m. ET.