The moon goes by many names. August saw the full sturgeon moon while in March sky-gazers may have witnessed the blood moon, which occurs when the satellite appears to turn red during a lunar eclipse. You may have also heard of a blue moon, the second full moon to happen in one month.

And then there is the black moon, occurring this weekend, which is rare — and invisible.

This phenomenon will occur Friday night into the early hours of Saturday. The moon will be closest to the sun at 2:0