Jakarta (ANTARA) - A striking blood-red lunar eclipse—commonly known as a "blood moon"—will be visible across Indonesia from late night on September 7 to the early hours of September 8, 2025.

The National Research and Innovation Agency (BRIN) has announced that the eclipse will begin at 11:27 PM WIB and conclude at 2:56 AM WIB, offering skywatchers a rare and vivid celestial display.

In a statement shared via BRIN’s official Instagram account (@brin_indonesia), Thomas Djamaluddin, Research Professor of Astronomy and Astrophysics at BRIN’s Space Research Center, explained the phases of the eclipse.

He noted that the event begins when the moon enters Earth’s shadow, marking the start of a partial eclipse.

Once the entire full moon is enveloped by the shadow, it transitions into a total lunar eclipse.

As the Earth’s shadow gradually moves away, the moon returns to the partial phase, signaling the end of the eclipse.

During the total eclipse, the moon does not turn completely dark. Instead, red light refracted through Earth’s atmosphere illuminates the lunar surface, giving it a deep crimson hue.

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"This phenomenon is what earns the eclipse its nickname, the 'blood moon'," he said.

The eclipse will unfold in four key stages: the partial phase begins at 11:27 PM WIB, followed by the total eclipse starting at 12:31 AM WIB. The total phase ends at 1:53 AM, and the partial eclipse concludes at 2:56 AM WIB.

Thomas added that the entire event will be visible from all regions of Indonesia, making it an ideal opportunity for public observation.

Looking ahead, the next total lunar eclipse is expected on March 3, 2026. However, viewers in Indonesia will only witness the final moments of that event, as the full moon will rise after the total phase has ended.

Thomas emphasized that lunar eclipses are safe to observe with the naked eye and can even be captured using certain smartphone cameras.

He also highlighted their scientific significance, noting that the curved shadow seen during the partial phase serves as visual proof of Earth’s spherical shape.

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