Super Flower Blood Moon 2021 for kids: Build a lunar eclipse model!

NASA shared a fun new learning guide for students to build their own lunar eclipse model ahead of this week's "Super Flower Blood Moon" total lunar eclipse. 

On Wednesday (May 26), skywatchers will be treated to a spectacular lunar event, when a supermoon and a total lunar eclipse occur simultaneously. A supermoon occurs when a full moon coincides approximately with the moon's perigee, or the point in its elliptical orbit at which it is closest to Earth. As a result, the moon appears to be bigger and brighter than usual. 

Related: Teach your kids about the Super Flower Blood Moon eclipse

May's supermoon also happens to coincide with a total lunar eclipse — the only total lunar eclipse of 2021. During such an event, the moon is completely engulfed in Earth's shadow while our planet sits directly between the sun and the moon. 

The lunar event will be visible on Wednesday in western North and South America, as well as in eastern Asia, Australia and the Pacific Ocean beginning at 4:47 a.m. EDT (0847 GMT). Peak totality will occur at 7:16 a.m. EDT (1116 GMT), and the eclipse will end at 9:50 a.m. EDT (1350 GMT).

Super Flower Blood Moon 2021: Where & when to see the supermoon eclipse Webcast info: How to watch the supermoon eclipse of 2021 online

Super Flower Blood Moon Eclipse

The total lunar eclipse of Jan. 20-21, 2019, captured by astrophotographers Imelda Joson and Edwin Aguirre from the suburbs of Boston. From left to right: The start of totality, at 11:41 p.m. EST on Jan. 20; the middle of totality, at 12:12 a.m. on Jan. 21; and the end of totality at 12:44 a.m.

(Image credit: Courtesy of Imelda Joson and Edwin Aguirre)

If you take a photo of the 2021 total lunar eclipse let us know! You can send images and comments to

To teach kids about the upcoming total lunar eclipse, NASA shared a learning guide that explains the science behind eclipses and how to build a model using a paper plate, a small ball, and a few other household items. The DIY tutorial demonstrates why and when lunar eclipses occur. 

Using the paper plate, you'll first draw or trace a circle about 3 to 5 inches (8 to 13 centimeters) in diameter around the center of the plate. Then, draw a smaller circle at the center of that circle to represent Earth, and a reference arrow pointing outward from the top edge of the paper plate. 

A map showing where the May 26, 2021 lunar eclipse is visible. Contours mark the edge of the visibility region at eclipse contact times. The map is centered on 170°15'W, the sublunar longitude at mid-eclipse. (Image credit: NASA's Scientific Visualization Studio)

On the inside edge of the larger circle, mark four evenly spaced points at 0, 90, 180 and 270 degrees. Carefully cut along the top and bottom of the larger circle you drew, leaving the middle sections connected. Then, tilt the interior circle to represent the tilted orbit of the moon around Earth; the outer part of the plate represents the plane in which Earth's shadow falls.

Eclipses occur when the sun, moon and Earth line up. Lunar eclipses happen during a full moon, when the moon and sun are on opposite sides of Earth. To model a lunar eclipse, place the paper plate on a flat surface with the reference arrow pointing away from you and the small ball representing the sun opposite the arrow. Move the plate counter-clockwise around the ball to demonstrate when a lunar eclipse would occur, using your eclipse model to answer the questions in the guide. 

You can find the full step-by-step learning guide to build your own lunar eclipse model online, along with information about several free online webcasts offering live views of the eclipse on May 26. 

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Samantha Mathewson
Contributing Writer

Samantha Mathewson joined as an intern in the summer of 2016. She received a B.A. in Journalism and Environmental Science at the University of New Haven, in Connecticut. Previously, her work has been published in Nature World News. When not writing or reading about science, Samantha enjoys traveling to new places and taking photos! You can follow her on Twitter @Sam_Ashley13.