Science Source Feb 2010
EN_90286391_0237
![Science Source Feb 2010](img/medium/arch1/dvd0114/19/EN_90286391_0237.jpg)
Solar corona during a total eclipse with maximum sunspot activity. The corona is a cloud of low-density plasma (hot ions) surrounding the Sun. Normally it is not visible, being obscured by the brightness of the Sun's visible surface. It is revealed during a total solar eclipse, which occurs when the Moon blocks the light from the rest of the Sun. This moment of totality lasts for only a few minutes. Total solar eclipses usually occur less than once a year, and can only be seen from a small area of the Earth's surface.
2010-02-13
EAST NEWS
Science Source
Science Source
5t7640
0,66MB
28cm x 19cm by 300dpi
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