The Sun Our Star

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The Sun - Our Star
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The Atmosphere
Photosphere surface Visible layer 6000 K
(10,000 F) Granules - bumps Cause?
Convection
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movie
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Solar Spectrum
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Other Atmosphere Layers
Chromosphere - above the photosphere 10,000 K
and rising Pinkish
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Corona Outermost layer 1 to 2 million K Solar
Winds - particles from Sun, aurorae
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Sunspots
Cooler than photosphere Weeks or months gt Earth
in size
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Umbra
Penumbra
Solar rotation - equator goes faster than
poles Differential Rotation
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11 years between maximum/minimum numbers
Location of spots varies during cycle
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Magnetic Nature of Spots Sunspot polarity lasts
for 11 years in each hemisphere
11 years later
Actual sunspot cycle is 22 years! Whats the deal
with sunspots?
Movie
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Solar Eruptions
Flares and Prominences
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Coronal Mass Ejections (CME) - the Biggest
eruptions
What if one of these heads towards us?????
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Aurorae!!!
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