CAPE CANAVERAL, Florida: Skywatchers are in for a cosmic treat this weekend as the year's second total lunar eclipse makes its appearance — and this time, Asia will enjoy the best vantage points.

On Sunday night and into the early hours of Monday, Earth will glide directly between the sun and the moon, casting its vast shadow across the lunar surface. As the alignment reaches perfection, the moon will gradually dim before taking on its dramatic red tint, a phenomenon popularly known as a "blood moon."

This eclipse will not be a fleeting one. The period of totality — when the moon is completely immersed in Earth's shadow — will last for a remarkable one hour and 22 minutes. From the first subtle "bite" of shadow until the final phase of the spectacle, the entire event will stretch over more than five hours, offering observers plenty of time to take in the celestial show.

Earlier this year, in March, a shorter lunar eclipse favored viewers across the Americas. The upcoming event, however, belongs to Asia and its neighboring regions. The full eclipse will be visible across a vast expanse — stretching from Saudi Arabia to the Philippines, north to the Arctic Ocean, and south to Antarctica. 

Large parts of East Africa and western Australia will also enjoy the complete sequence. Elsewhere, including the rest of Africa, Europe, and parts of Australia, people will witness at least a portion of the eclipse. Even coastal Brazil and sections of Alaska will catch glimpses of the event.

Adding to the excitement, this lunar eclipse will be followed just two weeks later by a partial solar eclipse, visible from New Zealand, parts of Australia, and Antarctica, making September a thrilling month for astronomy enthusiasts.

But why does the moon turn red instead of disappearing entirely? The answer lies in Rayleigh scattering, the same effect that makes sunsets glow crimson. As Earth blocks direct sunlight from reaching the moon, the atmosphere bends and filters the remaining light. Shorter blue wavelengths scatter out, while the longer red wavelengths pass through, bathing the moon in its eerie, coppery glow. 

This "blood moon" effect has fascinated cultures for centuries and continues to captivate skywatchers worldwide.

The upcoming September 2025 eclipse is being hailed as especially significant. Not only does it feature an unusually long duration of totality, but its global visibility is also exceptional. Astronomers estimate that about 88 percent of the world's population will witness at least part of the event. 

Around 6.27 billion people will be able to view the total eclipse in its entirety, while nearly 4.9 billion will experience the complete sequence from start to finish. That makes it one of the most widely accessible lunar eclipses in recent history.

For astronomers and casual stargazers alike, this promises to be the longest total lunar eclipse since 2022 and one of the most spectacular. Whether watched from deserts in the Middle East, cities across Asia, or remote villages in the Arctic, the sight of a glowing red moon hanging in the night sky will unite billions in awe of the same cosmic performance.

(Image credit: VirtualTelescope.eu | 7 September 2025).