The Last Chandra Grahan 2025 ....

   

     A lunar eclipse, also called Chandra Grahan, occurs when the Earth comes exactly between the Sun and the Moon, blocking the Sun’s light from reaching the Moon. This alignment causes the Earth’s shadow to fall on the Moon, making it appear darkened, reddish, or partially covered.

For a lunar eclipse to happen, several conditions must be fulfilled:

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1. The Sun, Earth, and Moon Must Be Perfectly Aligned

A lunar eclipse only happens when all three bodies are arranged in a straight line.

This alignment is called syzygy.

When this occurs, the Earth blocks sunlight from directly reaching the Moon.

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2. It Occurs Only on a Full Moon Night

A lunar eclipse can only happen on a full moon, because during the full moon, the Moon is directly opposite the Sun, with the Earth in between.

However, not every full moon causes an eclipse because the alignment has to be exact.

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3. The Moon Must Pass Through the Earth’s Shadow

The Earth casts two types of shadows:

Umbra: The dark, central part of the shadow where sunlight is completely blocked.

Penumbra: The outer part where sunlight is only partially blocked.

A lunar eclipse occurs when the Moon passes through these shadows.

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Types of Lunar Eclipses

1. Total Lunar Eclipse

The entire Moon enters the Earth’s umbra.

The Moon often turns red, which is why it is called the Blood Moon.

This happens because Earth’s atmosphere bends sunlight, allowing only the red wavelengths to reach the Moon.

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2. Partial Lunar Eclipse

Only a part of the Moon enters the Earth’s umbra.

You can see a dark “bite” taken out of the Moon.

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3. Penumbral Lunar Eclipse

The Moon passes through Earth’s penumbra.

This is very subtle—only a slight dimming appears, and many people hardly notice it.

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Why Don’t We Have a Lunar Eclipse Every Full Moon?

The Moon’s orbit is tilted about 5 degrees relative to Earth’s orbit around the Sun.

Because of this tilt, the Moon usually passes above or below the Earth’s shadow.

Only when the Sun, Earth, and Moon are on the same plane (called lunar nodes) does an eclipse occur.

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What We See During a Lunar Eclipse

The Moon gradually darkens.

It may turn copper-red during the total phase.

The phenomenon can last for hours, and it is safe to view with the naked eye.

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Conclusion

A lunar eclipse happens when:

The Earth is exactly between the Sun and the Moon,

The Moon is in its full moon phase,

And the Moon passes through the Earth’s shadow.

This rare alignment leads to one of the most beautiful celestial events visible from Earth.         

1. First Stage – Total Lunar Eclipse (Blood Moon)

In the first part of the image (left side), the Moon appears deep red or copper-colored.

This stage is called a Total Lunar Eclipse or Blood Moon.

During this phase, the Moon is completely inside the Earth’s umbra (the darkest part of the shadow).

The Moon looks red because sunlight bends through the Earth’s atmosphere.

Earth’s atmosphere scatters blue light and only red light reaches the Moon, making it appear red.

2. Middle Stage – Partial Coverage & Fading Red Color

In the middle part of the image, the Moon is still in the Earth’s shadow, but the red color is becoming lighter.

This stage shows the Moon slowly moving out of the Earth’s shadow.

The reddish color fades as the Moon starts receiving more sunlight.

It is a transition stage between total and partial eclipse.

3. Final Stage – Partial Lunar Eclipse

On the right side, you can see that only part of the Moon is covered, and the remaining part is bright.

This is a Partial Lunar Eclipse.

Types of Lunar Eclipses

1. Total Lunar Eclipse – Entire Moon in umbra (Moon looks red)

2. Partial Lunar Eclipse – Only part of the Moon enters umbra

3. Penumbral Lunar Eclipse – Moon enters only penumbra (very light shadow, hard to 

notice)......