本帖最后由 人与自然 于 2014-2-25 22:20 编辑
The sun's period of peak activity may be beginning to fade, but our star doesn't plan on moving out of its 'solar maximum' quietly. At 00.49 GMT this morning, a huge sunspot released a massive X4.9-class flare - the biggest of 2014. Because of its location on the sun's southeastern limb, the flare is not expected to impact satellites or radio communication, scientists claim.
At 00.49 GMT this morning, a huge sunspot first spotted in January released a X4.9-class flare - the biggest of 2014. The flare can be seen on the left had side of the sun in this image
On January 28, 2014, the Iris probe witnessed its strongest solar flare since it launched in the summer of 2013
A false-colour composite image from a blast of activity originating from an active sunspot region at the centre of the sun's disk. The sun erupted with a powerful X1.2-class solar flare on January 7, disrupting radio traffic and sending a blast of electrically charged particles our way
This picture combines two images from Nasa's Solar Dynamics Observatory captured in January. Together, the images show the location of a giant sunspot group on the sun, and the position of an X-class flare that erupted
This labeled image taken by SDO's Helioseismic and Magnetic Imager shows the location of two active regions on the sun, labeled AR1944 and AR1943, which straddle a giant sunspot complex. A January 7, 2014, X1.2-class flare emanated from an area closer to AR1943
The sun is currently in an active phase of its 11-year solar weather cycle. The current cycle, known as Solar Cycle 24, began in 2008. In November, the sun fired off a similarly huge solar flare causing a wide-area blackout of high frequency signal
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