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May 14 2013

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SOLAR ACTIVITY SURGES: A sunspot on the sun’s eastern limb is crackling with powerful X-class solar flares. It announced itself with an X1.7-class eruption on May 13th at 0217 UT, quickly followed by an X2.8-class flare at 1609 UT. These are the strongest flares of 2013, and they signal a significant uptick in solar activity. More eruptions are in the offing.

Both of today’s flares have produced strong flashes of extreme ultraviolet radiation. Above is the view of the X1.7-flare from NASA’s Solar Dynamics Observatory.

The explosions also hurled coronal mass ejections (CMEs) into space. Coronagraphs onboard the Solar and Heliospheric Observatory are tracking the clouds: movie. The planet in the CME movie is Mercury. Although the CMEs appear to hit Mercury, they do not. In fact, no planets were in the line of fire. However, the CMEs appear to be on course to hit NASA’s Epoxi and Spitzer spacecraft on May 15-16. …

  Via Time Machine

Reposted bymolotovcupcakeschaaf

September 05 2012

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SUBSIDING STORM: A geomagnetic storm that began on Sept. 3rd when a coronal mass ejection (CME) hit Earth’s magnetic field is subsiding. The impact at 1200 UT (5 am PDT) induced significant ground currents in the soil of northern Scandinavia and sparked bright auroras around the Arctic Circle. Ole C. Salomonsen photographed the display over Naimakka, Finland, on Sept. 4th.

“There I was standing all alone deep in the Finnish forest, just in awe of this display of light above my head,” says Salomonsen. “This is just one of many images of spectacular auroras I shot on this wonderful night.” …

(via Time Machine)

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