Question

lunar eclipse

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GPT-4o mini
A lunar eclipse occurs when the Earth passes between the Sun and the Moon, causing the Earth's shadow to fall on the Moon. This phenomenon can only happen during a full moon when the Sun, Earth, and Moon are aligned in a straight line or very close to it.

There are three main types of lunar eclipses:

1. **Total Lunar Eclipse**: The entire Moon passes through the Earth's umbra (the darkest part of its shadow). During this event, the Moon can take on a reddish color, often referred to as a "Blood Moon," due to the scattering of sunlight through the Earth's atmosphere.

2. **Partial Lunar Eclipse**: Only a portion of the Moon enters the Earth's umbra, while the rest remains in the penumbra (the lighter part of the shadow). This results in part of the Moon appearing darkened.

3. **Penumbral Lunar Eclipse**: The Moon passes through the Earth's penumbra, causing only a subtle shading on the Moon's surface. This type of eclipse can be difficult to observe.

Lunar eclipses are safe to watch with the naked eye, unlike solar eclipses which require protective eyewear. They can be viewed from anywhere on the nighttime side of the Earth. Lunar eclipses typically occur a few times a year, but not every full moon results in an eclipse. The next occurrence of a lunar eclipse, as well as its visibility from different regions, can be found in astronomical calendars or websites.