Saturday, September 21, 2019
How is the moon eclipsed?
A lunar eclipse occurs when the Earth passes directly between the Sun and the Moon, causing the Earth's shadow to be cast upon the Moon. This phenomenon can only occur during a full moon when the Sun, Earth, and Moon are aligned in a straight line (also known as syzygy).
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| How is the moon eclipsed |
There are three types of lunar eclipses:
1. Penumbral Lunar Eclipse: This occurs when the Moon passes through Earth's penumbra, the outer part of the shadow where Earth partially blocks the Sun's light. During a penumbral lunar eclipse, the Moon appears slightly darker, but the change is subtle and difficult to observe with the naked eye.
2. Partial Lunar Eclipse: In a partial lunar eclipse, a part of the Moon enters Earth's umbra, the central and darkest part of the shadow. During this type of eclipse, a portion of the Moon appears darkened.
3. Total Lunar Eclipse: A total lunar eclipse happens when the entire Moon enters Earth's umbra. During this event, the Moon can take on a reddish or coppery hue, often referred to as a "blood moon." This reddish color is caused by Earth's atmosphere scattering sunlight and allowing only the longer wavelengths, such as red and orange, to reach the Moon.
The occurrence of lunar eclipses is relatively common and can be observed from any location on Earth where the Moon is above the horizon during the eclipse. Unlike solar eclipses, lunar eclipses are safe to view with the naked eye and do not require any special protective eyewear.