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gptkbp:instanceOf
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Astronomical phenomenon
Solar feature
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gptkbp:affects
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Solar irradiance
Space weather
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gptkbp:appearance
|
Dark spot
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gptkbp:cataloguedIn
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gptkb:NOAA_sunspot_number
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gptkbp:causedBy
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Magnetic activity
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gptkbp:cycle
|
11 years
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gptkbp:discoveredBy
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gptkb:Galileo_Galilei
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gptkbp:effect
|
gptkb:Ionosphere
Telecommunications
Solar radiation
Power grids
Radio communication
Astronaut safety
Auroras
Climate (debated)
Cosmic ray flux
Earth's upper atmosphere
Geomagnetic storms
Global positioning systems
Navigation systems
Satellite drag
Satellite operations
Spacecraft electronics
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gptkbp:firstObserved
|
1610
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gptkbp:hasComponent
|
gptkb:Penumbra
gptkb:Umbra
|
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gptkbp:hasLifetime
|
Days to months
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gptkbp:hasMinimumActivity
|
Solar minimum
|
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gptkbp:hasPeakActivity
|
Solar maximum
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gptkbp:hasViewOf
|
gptkb:Earth
|
|
https://www.w3.org/2000/01/rdf-schema#label
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Sunspot
|
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gptkbp:location
|
gptkb:Photosphere_of_the_Sun
|
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gptkbp:magneticFieldStrength
|
Strong
|
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gptkbp:measures
|
gptkb:Wolf_number
|
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gptkbp:observedBy
|
Ancient times
Solar telescope
|
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gptkbp:polarization
|
Magnetic
|
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gptkbp:recordedAt
|
gptkb:Chinese_astronomy
European astronomy
|
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gptkbp:relatedTo
|
Coronal mass ejection
Solar cycle
Solar flare
|
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gptkbp:shape
|
Irregular
|
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gptkbp:size
|
Up to 50,000 km
|
|
gptkbp:studiedBy
|
Solar physicists
|
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gptkbp:studiedIn
|
gptkb:Helioseismology
|
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gptkbp:temperature
|
3000–4500 K
|
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gptkbp:bfsParent
|
gptkb:MARVEL_SNAP
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gptkbp:bfsLayer
|
4
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