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August 07 2013

06:59

September 01 2012

21:32
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MAGNIFICENT ERUPTION: A filament of magnetism curling around the sun’s southeastern limb erupted on August 31st, producing a coronal mass ejection (CME), a C8-class solar flare, and one of the most beautiful movies ever recorded by NASA’s Solar Dynamics Observatory.

The explosion hurled a CME away from the sun traveling faster than 500 km/s (1.1 million mph). The cloud, shown above, is not heading directly toward Earth, but it could deliver a glancing blow to our planet’s magnetic field on or about September 3rd. This date is preliminary and may be changed in response to more data from coronagraphs on the Solar and Heliospheric Observatory (SOHO). Stay tuned.

(via Spaceweather.com Time Machine)

Reposted bysiriusminerva siriusminerva

July 05 2012

MerelyGifted
19:32

HIGH SOLAR ACTIVITY: Behemoth sunspot AR1515 is crackling with M-class solar flares and appears to be on the verge of producing an X-class explosion. NOAA forecasters estimate an 80% chance of M-flares and a 10% chance of X-flares during the next 24 hours. 

INCOMING CME: On July 4th, sunspot AR1515 hurled at least four minor CMEs into space. Most flew south of the ecliptic plane (the orbital plane of the planets), on track to miss everything. One of them, however, appears to be heading toward Earth. Above is an animated forecast track of the incoming cloud.

According to analysts at the Goddard Space Weather Lab, who prepared the forecast, the cloud will reach Earth on July 7th around 0600 UT. High-latitude sky watchers should be alert for auroras on that date.

SOLAR STATIC: Sunspot AR1513 erupted on the 4th of July, producing an M2-class solar flare and a burst of shortwave radio noise that roared out of the loudspeakers of receivers on Earth. Amateur radio astronomer Thomas Ashcraft of New Mexico recorded the solar static at 21 MHz.  Listen or download at the webpage.

Reposted bysiriusminerva siriusminerva
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