When Will Total Solar Eclipses Stop?

As the moon slowly moves away from Earth, total solar eclipses are becoming more rare. In about 600 million years, the moon’s shadow won’t block the sun at all—when will total solar eclipses stop? Learn how the Saros cycle causes eclipses now but is gradually shifting them to new locations. Experience this celestial wonder before it’s gone forever.
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    The Saros Cycle and the Frequency of Total Solar Eclipses

    According to NASA, total solar eclipses occur due to a natural cycle known as the Saros cycle . The Saros cycle causes the moon’s shadow to pass over the same parts of Earth’s surface every 18 years and 11 days. This periodicity results in total solar eclipses occurring at the same locations on Earth, though each eclipse in the series is visible from a slightly different geographic area.

    The Gradual Shift of the Saros Cycle

    However, the Saros cycle is gradually shifting the locations of total solar eclipses over time. This is because the moon is slowly receding from Earth, increasing its distance from us by about 1.5 inches per year. As the moon moves farther away, its shadow becomes narrower and shifts slightly with each Saros cycle. Over centuries, this small change accumulates, causing total solar eclipses to move to new locations on the globe.

    When Total Solar Eclipses Will End

    According to astronomers’ calculations, total solar eclipses will continue for many centuries into the future but will become increasingly rare over time. In about 600 million years, the moon will have receded far enough from Earth that its shadow will no longer be able to completely block out the sun, and total solar eclipses will cease to occur. While this seems like an unimaginably long time, it is still a sobering reminder that even predictable celestial events like eclipses will not last forever.

    Buy solar eclipse glasses here to experience this wondrous phenomenon while you still can!

    Summary

    Total solar eclipses occur due to the Saros cycle, which causes the moon’s shadow to pass over the same parts of Earth every 18 years. However, the moon is slowly moving farther from Earth, so the Saros cycle is gradually shifting the locations of total solar eclipses. According to calculations, total solar eclipses will continue for centuries but become rarer over time, and in about 600 million years, the moon will be too far from Earth for its shadow to block out the sun completely.

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