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Blood Moon is a term for a total lunar eclipse that makes the Moon look red, or for four total eclipses in a row. Learn why the Moon turns red, how often lunar tetrads occur, and the difference between Blood Moon and Blue Moon.
Jan 14, 2024 · A "blood moon" happens when Earth's moon is in a total lunar eclipse. While it has no special astronomical significance, the view in the sky is striking as the usually whitish moon becomes...
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- Joe Rao
- The moon enters the penumbral shadow. The shadow cone of the Earth has two parts: a dark, inner umbra, surrounded by a lighter penumbra. The penumbra is the pale outer portion of Earth's shadow.
- Earth's penumbral shadow appears. Now, the moon has progressed far enough into the penumbra that it should be evident on the moon's disk. Start looking for a very subtle light shading to appear on the moon's upper left portion.
- The moon enters Earth's umbral shadow. The moon now begins to cross into Earth's dark central shadow, called the umbra. A small, dark scallop begins to appear on the moon's upper-left (northeastern) limb.
- The moon is 75% covered. With three-quarters of the moon's disk now eclipsed, the part of it that is immersed in shadow should begin to light up very faintly, similar to a piece of iron heated to the point where it just begins to glow.
May 27, 2021 · Stargazers in a number of countries have been treated to a rare Super "blood" Moon as the Earth's satellite turned orangey-red. Such an event happens only when the Earth, the Moon and the Sun...
May 18, 2021 · Learn what a supermoon and a lunar eclipse are, how they occur, and why the Moon turns red during a total eclipse. Find out when and where to see the May 26, 2021 supermoon eclipse and how to watch it online.
May 16, 2022 · A Blood Moon total lunar eclipse will occur on May 15-16, 2022 and will look similar to this view of one from July 2018. Here's everything you need to know about the event.
May 16, 2022 · Learn how and when to watch the total lunar eclipse, also known as a blood moon, that will be visible from North and South America, parts of Europe and Africa. See eclipse maps, timings, facts and live stream.
