But the dark shadow cone of the moon's umbra can extend out for no longer than 235,700 miles that's less than the moon's average distance from Earth.
Because the moon circles Earth in an elliptical orbit, its distance from Earth can vary from 221,457 miles to 252,712 miles. The difference is, the moon is too small to cover the disk of the sun completely. However, an annular solar eclipse is similar to a total eclipse in that the moon appears to pass centrally across the sun. The maximum duration for an annular eclipse is 12 minutes 30 seconds. The annular eclipse is a subspecies of a partial eclipse, not total. somewhat a sort of weird "counterfeit twilight" since so much of the sun still shows. (Image credit: Koji Kudo) Annular solar eclipsesĪn annular eclipse, though a rare and amazing sight, is far different from a total one. This composite image of an annular solar eclipse was taken by Koji Kudo from Kawasaki, Japan, on May 21, 2012. If, for instance, you are positioned just outside of the path of the total eclipse, you will see the sun wane to a narrow crescent, then thicken up again as the shadow passes by.
The closer you are to the path of totality, the greater the solar obscuration. In a different scenario, those who are positioned within a couple of thousand miles of the path of a total eclipse will see a partial eclipse. Usually the penumbra gives just a glancing blow to our planet over the polar regions in such cases, places far away from the poles but still within the zone of the penumbra might not see much more than a small scallop of the sun hidden by the moon. How much of the sun remains in view depends on the specific circumstances. In these cases, a part of the sun always remains in view during the eclipse. (Image credit: Joseph Matus/NASA/MSFC) Partial solar eclipsesĪ partial solar eclipse occurs when only the penumbra (the partial shadow) passes over you. Joe Matus, an engineer at NASA's Marshall Space Flight Center in Huntsville, Alabama, captured this image of the Great American Total Solar Eclipse from Hopkinsville, Kentucky, on Aug.
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