Question

Why is the lunar eclipse not visible in all the places on the night side of the Earth?

Answer 1

Explanation of Concept:

1. When the Sun, Earth, and Moon align, the Moon passes through the Earth's shadow, creating a lunar eclipse. During a complete lunar eclipse, the entire Moon is engulfed by the umbra, the darkest component of Earth's shadow. Up to 99.1% of the Moon's disc will be within Earth's umbra during this eclipse.
2. The lunar eclipse happens when the Sun, Earth, and Moon are completely or closely aligned with the Earth between the Sun and Moon.
3. If a person is at a place that is far beyond the line of alignment of Earth between the Sun and Moon, then the eclipse may not visible, or it may be partially visible.

Hence, the lunar eclipse is not visible in all the places on the night side of the Earth due to the alignment of Earth between the Sun and Moon.