Sunspot

1795

During his recognition of solar behavior and hypothesized solar structure, he inadvertently picked up the relative absence altogether of spots on the Sun from July, 1795 to January, 1800.

1800

During his recognition of solar behavior and hypothesized solar structure, he inadvertently picked up the relative absence altogether of spots on the Sun from July, 1795 to January, 1800.

2001

In 2001, observations from the Solar and Heliospheric Observatory (SOHO) using sound waves traveling below the photosphere (local [were used to develop a three-dimensional image of the internal structure below sunspots; these observations show that a powerful downdraft underneath each sunspot, forms a rotating

2011

|- | Top: sunspot region 2192 during the partial solar eclipse in 2014 and sunspot region 1302 in September 2011. Middle: sunspot close-up in the visible spectrum (left) and another sunspot in UV, taken by the TRACE observatory. Bottom: A large group of sunspots stretching about across. |} Sunspots are temporary phenomena on the Sun's photosphere that appear as spots darker than the surrounding areas.

2014

|- | Top: sunspot region 2192 during the partial solar eclipse in 2014 and sunspot region 1302 in September 2011. Middle: sunspot close-up in the visible spectrum (left) and another sunspot in UV, taken by the TRACE observatory. Bottom: A large group of sunspots stretching about across. |} Sunspots are temporary phenomena on the Sun's photosphere that appear as spots darker than the surrounding areas.




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