![]() In a recent article about the upcoming August 21st solar eclipse, an important fact is included: "Amazingly, even by 2017 there is no available technology to map t he magnetic field in the corona at resolutions comparable to those details seen during a total solar eclipse!" ![]() NASA And Total Solar EclipsesĪ viewer (don't forget to have proper eyewear!) observing the solar eclipse in the line of totality will see the sun's photosphere blocked out by the moon's umbra.įor NASA, total solar eclipses give their scientists a chance to observe the corona. And when it's at a minimum number of sun spots, the corona looks like more of a sphere.īecause of the light emitted from the sun's photosphere, without help from a coronagraph, the corona is only visible by sight from Earth during a total solar eclipse. At what's considered sunspot maximum, the corona appears more like a circle. One of the most interesting things about the sun's corona is that its shape frequently changes. Its outer layers are the photosphere, corona, chromosphere, and the transition region. ![]() Remember, the sun has multiple outer and inner layers. This might feel counterintuitive, but the sun's outermost layer, its corona, is still a mystery in many ways. You can also find out more out about our solar eclipse coverage on Twitter. As we look forward to the August 21st solar eclipse, the A Moment of Science blog has run other articles about solar eclipses.
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