In the last few days I’ve already answered some few emails and questions in social media about the Super Blood Blue Moon happening on the night from 31st January to 1st February 2018. What is this? Is this really important?
Short answer: No, it is not! This is just a lunar eclipse. The rest is hype to sell the story.
Visions of a Total Lunar Eclipse within clouds – 8 October 2014 – Sydney. More information and high resolution images in my Flickr. Credit: Ángel R. López-Sánchez.
Long answer: Let me use an email I wrote yesterday replying the questions asked by a journalist about this astronomical event.
1. Can you please define “super moon” “blood moon” and “blue” moon as they occur individually?
—> Supermoon: this is a term that many astronomers (me included) don’t like, as it was introduced by an astrologer (not an astronomer) but it is now very popular. It is just the moment the full moon is happening near the perigee (the Moon in its closest point to Earth). But, that is the important thing, the difference in size of a “supermoon” with respect an average moon is that a supermoon is ~5-6% larger than ...