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gptkbp:instanceOf
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gptkb:Astronomical_phenomenon
gptkb:Solar_feature
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gptkbp:affects
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Solar irradiance
Space weather
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gptkbp:appearDarkerThan
|
Surrounding solar surface
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gptkbp:canBeSeenWith
|
Proper solar filters
|
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gptkbp:canLast
|
Days to months
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gptkbp:causedBy
|
Magnetic activity
|
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gptkbp:cycle
|
About 11 years
|
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gptkbp:diameter
|
Up to 50,000 km
|
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gptkbp:discoveredBy
|
gptkb:Galileo_Galilei
|
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gptkbp:firstObserved
|
gptkb:Ancient_China
|
|
gptkbp:firstPhotographed
|
1845
|
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gptkbp:haveStructure
|
gptkb:Penumbra
gptkb:Umbra
|
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gptkbp:influenced
|
Earth's climate
|
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gptkbp:location
|
gptkb:Photosphere_of_the_Sun
|
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gptkbp:magneticFieldStrength
|
Up to 0.4 tesla
|
|
gptkbp:namedAfter
|
Dark spots on the Sun
|
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gptkbp:observedBy
|
gptkb:SOHO_spacecraft
gptkb:SDO_spacecraft
17th century
Solar telescope
|
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gptkbp:recordedAt
|
gptkb:Wolf_number
|
|
gptkbp:relatedTo
|
gptkb:Solar_flares
Solar cycle
Coronal mass ejections
|
|
gptkbp:studiedBy
|
gptkb:Helioseismology
Solar physicists
|
|
gptkbp:temperature
|
3000–4500 K
|
|
gptkbp:bfsParent
|
gptkb:With_Teeth
|
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gptkbp:bfsLayer
|
6
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Sunspots
|