Quick, how long do you think "once in a blue moon" means?  Once every ten years? Once in a lifetime?

NASA

Blue moons actually happen on average about every 2.7 years, so they're not a rare as some folks would have you believe. All a "blue moon" is, is when you have two full moons in the same month. We're clipping it kind of close with the full moon happening on the night of January 31st (morning of February 1st). This close timing will actually result in some folks having two blue moons in 2018.

We are also stretching things a tad calling this one a supermoon, as it's about a day off that designation. A supermoon appears a bit bigger and brighter due to it's proximity to earth.

Oh did I mention it's also a lunar eclipse? Yep, we have somewhat of a trifecta of lunar fun here.  If you'd like to learn a bit more, click here, otherwise just make sure you take a peek at the moon this Wednesday night/Thursday morning for a pick at a big, beautiful moon.