https://timeline.line.me/post/_daLGVfF4DEbbmj-Tc2zex10E6poz7wvEIbikDiY/1151737476604062748

Super Blue Blood Moon What is a super blue blood moon? The moon is full, tand it's the second full moon of the calendar month, which has been termed a blue moon. The moon is on a 28-day cycle so that only happens once in a while – or, as you might say, once in a blue moon. Next, the moon is known as a supermoon because it's especially close to the Earth, making it appear larger and brighter than usual. The moon doesn't orbit Earth in a perfect circle – it's an ellipse, which means there are times during the orbit that it is thousands of miles closer to Earth than others. Brian Day of NASA's Ames Research Center tells NPR that during these times, the moon can "appear 17 percent larger than it does at its furthest point in its orbit." https://www.npr.org/sections/thetwo-way/2018/01/30/581890038/wednesdays-rare-super-blue-blood-moon-how-to-see-it-and-what-we-can-learn