Here's why:
* Earth is a sphere: The Earth's round shape means that different places experience different times of day and night.
* The moon's shadow is narrow: During a solar eclipse, the moon's shadow falls on Earth, creating a path of totality (where the sun is completely blocked). This path is relatively narrow, and only people within that path witness the total eclipse.
* Time zones: Even within the path of totality, people in different time zones will experience the eclipse at different times.
Example:
Imagine a solar eclipse happening over the Atlantic Ocean. People in Europe might be experiencing the early stages of the eclipse while people in North America are still in the dark.
So, while everyone within the path of totality will witness the eclipse, it won't be happening simultaneously for everyone on Earth.
