May 23, 2011

A Prominence Breaks Free (SOHO Pick of the Week – May 20, 2011)

The STEREO (Ahead) spacecraft observed as a photogenic, solar prominence erupted and broke out into space over about 18-hour period (May 13, 2011). Prominences, notoriously unstable structures, are cooler clouds of gas that float above the Sun’s surface, tethered there […]
December 12, 2010

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 […]
October 18, 2010

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, […]
October 7, 2010

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.