On Aug. 21 of next year, skywatchers will be treated to the first total solar eclipse visible from the U.S. mainland since 1979.
from Space.com ift.tt/2bHJS4K
On Aug. 21 of next year, skywatchers will be treated to the first total solar eclipse visible from the U.S. mainland since 1979.
from Space.com ift.tt/2bHJS4K
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