The sun "smiles" over northern Finland last night during a midnight solar eclipse.
Partial solar eclipses, such as last night's, which is the second of 2011—happen when Earth crosses only through the faint outer part of the moon's shadow, known as the penumbra. (See pictures of January's partial solar eclipse.)
By contrast, during a total eclipse the sun is completely blotted out by the moon as its dark, central shadow, called the umbra, falls in a very narrow strip along Earth's surface.
(See "ring of fire" solar eclipse pictures.)
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