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![]() Sunspot flares again – headed for Earth? MARK ARMSTRONG ASTRONOMY NOW Posted: 07 March 2012 ![]() ![]() The large sunspot AR 1429 has unleashed its most powerful flare yet, hurling a bright coronal mass ejection (CME) into space and it may have Earth’s name on it. This morning (7 March) at 00.28h UT NASA’s Solar Dynamics Observatory recorded the immense ultra-violet flash of an X5-class solar flare resulting in a CME heading our way. Astronomers are not certain yet if the CME will hit the Earth head-on, but it is likely that it will strike a glancing blow on March 8 or 9. ![]() An X5-class flare erupted from the Sun this morning, launching a CME out into space. Image: SDO/NASA. The good news for solar observers is that AR 1429 is evolving and growing in size as it slow rotates toward the Sun’s central meridian. It is still a number of days from transiting and there is plenty of time to hope for a break in the cloudy conditions; looking at the UK forecast, this afternoon and tomorrow morning look promising (7-8 March). Keep up to date with events here and at spaceweather.com.For an explanation of the classification of solar flares visit spaceweather.com/glossary/flareclasses |
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