Here's why:
* Lunar eclipses occur when the Earth passes between the Sun and the Moon, casting its shadow on the Moon. Since the Earth's shadow is much larger than the Moon, anyone on the night side of Earth facing the Moon can see the eclipse.
* Solar eclipses, on the other hand, happen when the Moon passes between the Sun and the Earth, casting its shadow on the Earth. The Moon's shadow is much smaller, so a solar eclipse is only visible within a narrow path on Earth.
