The total phase of the solar eclipse of Aug. 21 will last a maximum of 2 minutes and 40 seconds for observers on the ground. Here's how long it will last at various points along the totality path -- and why total solar eclipses are so brief.
The total phase of the solar eclipse of Aug. 21 will last a maximum of 2 minutes and 40 seconds for observers on the ground. Here's how long it will last at various points along the totality path -- and why total solar eclipses are so brief.
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