Feb. 18th, 2011

Waking up

Feb. 18th, 2011 11:14 am
ellarien: Image of the Sun at multiple wavelengths, with prominence (astronomy2)
The Sun has been pretty active this week. The highlight was an X2.2 flare on the 15th (that's a big one, though still less than a tenth of the size of the monster flares of late October 2003; the biggest so far this cycle by quite a margin.) There might be aurora tonight even here -- though it'll probably too cloudy and/or moonlit to see much.






Below the cut is yesterday's APOD (2kx2k pix), showing the flare at the 193 Angstrom wavelength as seem by AIA.
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