Space Weather
On Feb. 17th at approximately 04:50 UT, a magnetic filament erupted from the sun's western limb. NASA's Solar Dynamics Observatory captured this high-resolution image of the blast:
Because of its location on the sun's western limb, the eruption did not send a CME toward Earth. However, there was an effect on our planet: Shortwave radio loudspeakers roared with static, an event called a Type II radio burst.
A minor geomagnetic storm was already underway when a coronal mass ejection, or CME, sent a huge cloud of solar material speeding toward Earth which impacted the planet on 19 February 2014, triggering auroras in the northerly parts of the continental United States.
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