“Super Blue Blood Moon Eclipse” is the description many Web sites are giving for the full Moon coming up. So, what does this mean? A Moon that’s super-big? One that’s blue? One that’s blood red? Maybe a combination of blue and red! A purple Supermoon?
- A supermoon occurs when the Moon is closest to Earth during its orbit, and theoretically larger than average.
- A Blue Moon is the popular name for a second full Moon in the same calendar month.
- A”Blood Moon” refers to the Moon’s hue on the night of a total lunar eclipse; it normally turns a coppery red.
Put ‘em all together and that’s what you’ve got.
January 31 is also the grand finale of a trilogy of Supermoons that have been taking place since early December.
“Supermoon” is a new term. No one used it until a few years ago. Instead, the Moon’s closest approach to Earth—full or otherwise—was called a Perigean Moon. The problem is that even the very closest Moon does not look any larger than your average normal Full Moon. The size difference is too small for the naked eye to detect. But, okay, call it super.
https://www.almanac.com/blog/astronomy/astronomy/supermoon-blue-moon-and-lunar-eclipse-january-31
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