Observers in eastern Australia, New Zealand, and the Pacific Islands, including Hawaii, will see both the total and the partial eclipse. The partial eclipse, which takes place as the Moon moves into and out of Earth’s shadow, will be visible from the eastern United States and Canada just before the Moon sets in the morning, and from India, Nepal, western China, Mongolia, and eastern Russia just after the Moon rises in the evening. Along the Asian Pacific Rim, the total eclipse will be visible just after moonrise. The total lunar eclipse will be visible near moonset in the western continental United States and Canada, all of Mexico, most of Central America and Ecuador, western Peru, and southern Chile and Argentina. Credit: NASA’s Scientific Visualization Studio. Contours mark the edge of the region where the eclipse will be visible at the times when the Moon enters or leaves the umbra (the part of the Earth's shadow where the Sun is completely hidden) and penumbra (the part where the Sun is only partially blocked). This map shows where the lunar eclipse is visible. Our atmosphere filters the light as it passes, softening the edge of our planet’s shadow and giving the Moon a deep, rosy glow.

During this alignment, Earth blocks some of the Sun’s light from reaching the full moon. What is a lunar eclipse?Ī lunar eclipse takes place when the Sun and Moon occupy precise positions on opposite sides of Earth.

When the Moon is at or near its closest point to Earth at the same time as it is full, it is called a “ supermoon.” During this event, because the full moon is a little bit closer to us than usual, it appears especially large and bright in the sky. Each month, the Moon passes through perigee (the point closest to Earth) and apogee (the point farthest from Earth). The Moon travels around our planet in an elliptical orbit, or an elongated circle. In other words, on May 26, 2021, the full moon will enter Earth’s shadow - and, when the Moon is not in our planet’s shade, it will appear even bigger and brighter than usual. This month brings the “most super” of the year’s supermoons, and on top of that, a total lunar eclipse.

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