This Sunday night, a rare astronomical event will unfold in the sky across India. The event will be a total lunar eclipse, commonly known as the “Blood Moon.” This will be the longest total lunar eclipse visible in India since 2022. According to astronomers, this eclipse will be the first time since July 27, 2018, that the entire country will witness a total lunar eclipse. In addition to India, this eclipse will also be visible in China, parts of Africa, and the eastern coast of Australia. The total lunar eclipse occurs when Earth comes between the Sun and the Moon, casting a shadow on the lunar surface.
When and How Long Will the Eclipse Last?
The total lunar eclipse will begin on the night of September 7 at 8:58 PM. The full eclipse will occur from 11:01 PM to 12:23 AM, lasting 82 minutes. The partial phase of the eclipse will end at 1:26 AM, and the entire event will conclude by 2:25 AM on the same night. This duration makes it one of the longest lunar eclipses in recent times. The next such extended lunar eclipse visible in India will take place on December 31, 2028.
As explained by Divya Oberoi, the Chairperson of the Public Outreach and Education Committee (POEC) of the Indian Astronomical Society (ASI) and an Associate Professor at the National Center for Radio Astrophysics, Pune, lunar eclipses are rare events. They do not occur every full moon or new moon because the Moon’s orbit around Earth is tilted by nearly five degrees compared to Earth’s orbit around the Sun.
Can the Eclipse Be Seen with the Naked Eye?
Unlike a solar eclipse, which requires special equipment for safe observation, a total lunar eclipse can be viewed safely with the naked eye. According to Niruj Mohan Ramanujam, the Head of the Science, Communication, Public Relations, and Education (SCOPE) section at the Indian Institute of Astrophysics, no special tools like telescopes or binoculars are necessary to view the eclipse. The partial lunar eclipse will be visible starting at 9:57 PM on September 7, and the total eclipse will be visible later.
Why Is It Called a “Blood Moon”?
During a total lunar eclipse, the Moon appears red due to the scattering of sunlight in Earth’s atmosphere. The sunlight that reaches the Moon is refracted and dispersed by the atmosphere, giving the Moon a red or “bloody” appearance. According to Ryan Milligan, an astronomer at Queen’s University Belfast in Northern Ireland, the blue light in sunlight scatters more easily than red light, making the Moon appear with a blood-red glow.
This red hue is one of the most captivating aspects of a total lunar eclipse, giving it its popular name, “Blood Moon.” In Europe and Africa, the partial eclipse will be visible as the Moon rises in the evening. However, the event will not be visible in the United States.
Viewing Locations and Best Times
In India, the total lunar eclipse will be visible across most parts of the country, making it a spectacle for many. The visibility of the eclipse will vary depending on location, but it will be especially prominent in cities like Delhi, Mumbai, Kolkata, Chennai, and Bangalore. For those who plan to observe the eclipse, the best times will be between 11:01 PM and 12:23 AM, when the Moon will be fully immersed in Earth’s shadow.
The partial eclipse will start at 9:57 PM, and observers can witness the gradual transformation of the Moon’s appearance before it enters the full eclipse phase. This gradual progression adds to the excitement, as the Moon will slowly darken before taking on its distinctive red hue.
How to Safely Observe the Eclipse
Although the total lunar eclipse can be observed with the naked eye, some people prefer using binoculars or telescopes for a more detailed view. These tools are not necessary for safety, but they enhance the experience, offering a closer look at the Moon during its transformation. For those who want a more immersive experience, a camera with a zoom lens can capture stunning images of the event.
It’s important to note that unlike solar eclipses, lunar eclipses do not pose a risk to the eyes. They are perfectly safe to watch without any special glasses or protective equipment.
The Significance of the Blood Moon
The Blood Moon has captivated human imagination for centuries, often being associated with various myths and legends. In many cultures, it has been seen as an omen or a symbol of change. In modern astronomy, however, it is simply a natural and rare event that occurs when the Sun, Earth, and Moon align in such a way that Earth’s shadow falls upon the Moon.
From a scientific standpoint, the Blood Moon is a wonderful opportunity for astronomers to study the Moon’s surface and Earth’s atmosphere. The way light bends and scatters during the eclipse can offer valuable insights into the composition of Earth’s atmosphere.
The Role of the Eclipse in Astronomy
Lunar eclipses are important events for astronomers, providing opportunities to study both the Moon and Earth’s atmosphere. The red color of the Moon during the eclipse is caused by the scattering of sunlight through Earth’s atmosphere, and scientists can use this phenomenon to study the Earth’s composition and its effects on light transmission.
Additionally, eclipses provide a great chance to observe other celestial phenomena, such as the alignment of stars and planets. For those who are particularly interested in astronomy, the Blood Moon offers a unique chance to engage with the cosmos.
The total lunar eclipse on Sunday, September 7, 2025, promises to be a spectacular sight across India. This rare Blood Moon event, which has not been visible in India since 2022, will last for over 80 minutes. The full eclipse will be visible to millions of people, offering a rare opportunity to witness one of the most beautiful celestial phenomena.
While the eclipse can be safely observed with the naked eye, astronomers and casual observers alike are encouraged to use binoculars or telescopes for a closer look. Whether you’re an experienced stargazer or someone watching the eclipse for the first time, this event offers an unforgettable opportunity to connect with the wonders of the universe.
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