Solar eclipse 2024 interactive map

The Moon Eclipses the Sun

An eclipse of the Sun happens when the New Moon moves between the Sun and Earth, blocking out the Sun's rays and casting a shadow on parts of Earth.

The Moon's shadow is not big enough to engulf the entire planet, so the shadow is always limited to a certain area (see map illustrations below).

This area changes during the course of the eclipse because the Moon and Earth are in constant motion: Earth continuously rotates around its axis while it orbits the Sun, and the Moon orbits Earth. This is why solar eclipses seem to travel from one place to another.

Which cities get the most eclipses?

Types of Solar Eclipses

There are 4 different types of solar eclipses.

How much of the Sun's disk is eclipsed, the eclipse magnitude, depends on which part of the Moon's shadow falls on Earth.

1. Partial solar eclipses occur when the Moon only partially obscures the Sun's disk and casts only its penumbra on Earth.
2. Annular solar eclipses take place when the Moon's disk is not big enough to cover the entire disk of the Sun, and the
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