Dr. C. Alex Young

December 12, 2010
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Epic Solar Filament Eruption from Dec. 6, 2010 Seen by STEREO

A very long solar filament that had been snaking around the Sun erupted (Dec. 6, 2010) with a flourish. STEREO (Behind) caught the action in dramatic detail in extreme ultraviolet light of Helium. It had been almost a million km […]
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November 15, 2010
A wide and vigorous active region group (AR11121 and AR11123) produced several flares as SDO observed in 171 angstrom extreme ultraviolet light (Nov. 11-12, 2010).
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Flashing Flares – SDO Pick of the Week (15 Nov 2010)

A wide and vigorous active region group (AR11121 and AR11123) produced several flares as SDO observed in 171 angstrom extreme ultraviolet light (Nov. 11-12, 2010). The tangle of magnetic field lines, made visible by particles spinning along them, connected and […]
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November 8, 2010
Lunar transit of the Sun
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Another Lunar Transit of the Sun Seen by SDO

As expected SDO experienced another lunar transit on November 6, 2010. This time the moon crossed the southern hemisphere moving from the south pole towards the northeast (left side) edge of the sun. The transit took about 30 minutes and […]
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October 25, 2010
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Magnetic Field Lines Galore (SDO Pick of the Week)

The illustration maps the magnetic field lines emanating from the Sun and their interactions superimposed on an extreme ultraviolet image from SDO (Oct. 20, 2010). As one can see, the field lines are most dense around active regions, but they […]
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October 18, 2010
SOHO Pick of the Week - 15 October 2010
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A Twisting Solar Prominence (SOHO Pick of the Week)

The STEREO (Ahead) spacecraft caught this tumultuous solar prominence as it twisted and turned over about 18 hours, as seen in profile above the Sun?s surface, before disappearing (Oct. 8, 2010). The cloud of cooler gases, suspended by magnetic forces, […]
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October 11, 2010
Increased Auroral Activity Oct. 11-12 from a Halo CME Oct. 6, 2010
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Increased Auroral Activity Oct. 11-12 from a Halo CME Oct. 6, 2010

Around 3:30 UT on October 6, 2010 a filament erupted in the northeast part of the solar disk (upper left area). Moving at around 375 km/s (850,000 miles per hour) the CME combined with the ambient solar wind then over […]
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October 7, 2010
A Solar Eruption as the Earth Blocks SDO’s View of the Sun
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A Solar Eruption as the Earth Blocks SDO’s View of the Sun

A filament erupted in the NE area of the sun. The eruption was observed by SDO and the associated Halo CME was seen by SOHO's C2 and C3 coronagraphs. SDO is currently in eclipse season so during this event the earth moved between SDO and the sun, moving across the sun for a few minutes.
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