Deep Partial Lunar Eclipse to Turn the Moon Copper-Red Across Parts of the World
Skywatchers are set for a striking celestial event as a deep partial lunar eclipse takes place on August 27–28, 2026, with most of the Moon expected to pass through Earth’s darkest central shadow.
According to NASA, the eclipse will reach its greatest point at 4:13 a.m. UTC on August 28, when about 96.3% of the Moon’s disk will be inside Earth’s umbra. Because only a small portion of the lunar surface will remain outside the central shadow, the event is expected to resemble a total lunar eclipse despite technically remaining partial.
Why the Moon Can Appear Red
During the eclipse, Earth’s shadow will gradually move across the full Moon. The portion entering the umbra can take on shades of copper, orange or red.
This coloration occurs because sunlight passing through Earth’s atmosphere is filtered before reaching the Moon. Blue wavelengths are scattered more strongly, while longer red and orange wavelengths can continue through the atmosphere and illuminate the eclipsed lunar surface.
The exact appearance can vary depending on atmospheric conditions, including the amount of dust and other particles present in Earth’s atmosphere.
A Nearly Total Appearance
NASA describes the event as a deep partial lunar eclipse. Its 96.3% obscuration refers to the percentage of the Moon’s area inside Earth’s umbra, rather than 96.3% of its diameter. NASA notes that roughly 93% of the Moon’s diameter will be within the umbra at maximum eclipse.
The distinction is important because the eclipse will not technically become total. A small section of the Moon will remain outside Earth’s darkest shadow.
Where Will It Be Visible?
The eclipse will be visible from large parts of the Americas, Europe and Africa, along with portions of the Pacific and western Asia, depending on the stage of the event and local viewing conditions.
The event begins during the night of August 27 in some locations and continues into August 28 in others. NASA says the partial phase begins at approximately 2:34 a.m. UTC, while the maximum occurs at 4:13 a.m. UTC.
Safe to Watch Without Special Protection
Unlike a solar eclipse, a lunar eclipse does not require special eye protection. NASA says the Moon can be observed safely with the naked eye, while binoculars or a small telescope can provide a closer view of Earth’s shadow moving across the lunar surface.
For the best experience, observers should choose an area with a clear view of the sky and limited artificial light. Cloud cover, local weather and the Moon’s position above the horizon will determine how clearly the eclipse can be seen.
A Dramatic Night-Sky Event
The August 2026 eclipse is particularly notable because of its depth. With almost the entire lunar disk entering Earth’s umbra, the event offers observers an opportunity to see the visual effects of a near-total eclipse without the Moon completely disappearing into Earth’s central shadow.
As the Moon moves through the shadow, its bright full-Moon appearance will gradually transform into a darker, copper-toned disk before returning to normal as the eclipse progresses.
The deep partial lunar eclipse is therefore expected to provide a memorable astronomical display across the regions where the event is visible, offering skywatchers a vivid demonstration of the alignment between the Sun, Earth and Moon.
