If you won't see the total solar eclipse, here's when your next chance will be

1970 solar eclipseGetty Images7th March 1970: Ten separate exposures on a single frame show the phases of a partial solar eclipse in the sky over Washington, DC.

In the United States, the next total solar eclipse will happen on August 21, 2017 — the first time since 1979.

Next week’s eclipse will be the first to cross the entire continental United States since 1918, however.

According to NASA, the total solar eclipse on February 26, 1979 crossed through Washington, Oregon, Idaho, Montana, North Dakota, and the Canadian provinces of Saskatchewan, Manitoba, Ontario and Quebec.

On August 21, only people in the relatively thin line of totality will get to see the full eclipse; most parts of the country will only see a partial one (when the moon covers a portion of the sun). If you’re not going to see the total effect this year, though, your next chance is not too far away.

After the August 2017 solar eclipse, the US will see another solar eclipse on October 14, 2023. That one will be annular, however — which means the edge of the sun will remain visible as a bright ring around the moon. That eclipse will be visible from Northern California to Florida, according to NASA. After that, the next total eclipse in the US will occur on April 8, 2024, and will be visible from Texas to Maine.

A total solar eclipse is an astronomical phenomenon that occurs when the moon passes between Earth and the sun, and appears to cover the latter. The two other types of eclipses are annular and partial.

In Earth’s history, there have been some 3 billion solar eclipses in the US alone, though some were partial rather than total.

The best cities in the US to see it will be Salem, Oregon; Nashville, Tennessee; Kansas City, Missouri; Lincoln, Nebraska; and Columbia and Charleston, South Carolina.

Here’s a map of the August 21 eclipse’s path across the country:

United states us total solar eclipse map august 21 2017 nasa gsfc svsNASA’s Scientific Visualisation StudioA US map of the total solar eclipse’s shadow on August 21, 2017.

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