The phenomenon, expected to be visible to nearly 85% of the world’s population, will mark the second and final lunar eclipse of 2025, according to NASA.

A lunar eclipse takes place when the Earth passes directly between the sun and the moon, placing its shadow on the surface of the moon. This will prevent sunlight from striking the moon directly, and so the moon appears to be darkened. As opposed to solar eclipses, which need special protective eyewear, lunar eclipses can be viewed safely with the naked eye.

The theatrical red color of the "blood moon" appears during the totality of the first eclipse when Earth s atmosphere scatters sunlight, dispersing the blue wavelengths and leaving only red light to illuminate the moon. The result is the otherworldly red glow that has drawn gapers for ages.

The eclipse will start at 11:28 a.m. ET, at the moment of totality at 1:30 p.m. ET, and it will last for five hours and 27 minutes in total. The blood moon will be visible for approximately 82 minutes.

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Viewers in Australia, Asia, Africa and Eastern Europe will see the whole event. Partial views will be available in Western Europe, U.K., and Spain, as well as eastern Brazil. Skygazers in North and South America will miss the whole show since the moon will be below the horizon at this time.

NASA predicted that the next chance to see a lunar eclipse won t be until March 3, 2026.