The most powerful solar flare of the year erupted from the sun today (April 11) sparking a temporary radio blackout on Earth, NASA officials say.
The solar flare occurred at 3:16 a.m. EDT (0716 GMT) and registered as a M6.5-class sun storm, a relatively mid-level flare on the scale of solar tempests. It coincided with an eruption of super-hot solar plasma known as a coronal mass ejection.
"This is the strongest flare seen so far in 2013," NASA spokeswoman Karen Fox explained in a statement. "Increased numbers of flares are quite common at the moment, since the sun’s normal 11-year cycle is ramping up toward solar maximum, which is expected in late 2013."
ASA’s Solar Dynamics Observatory captured this image of a powerful M6.5 class flare, the strongest of 2013 at the time, at 3:16 EDT on April 11, 2013. This image shows a combination of light in wavelengths of 131 and 171 Angstroms.
NASA’s sun-watching Solar Dynamics Observatory recorded a stunning video of the strongest solar flare of 2013, showing it extreme detail. The spacecraft is one of several space-based observatories keeping track of the sun’s solar weather events.
NASA officials dubbed today’s solar flare as a "spring fling" for the sun, which has been relatively calm as it heads into its peak activity period.
Today’s M-class solar flare was about 10 times weaker than X-class flares, which are the strongest flares the sun can unleash. M-class solar flares are the weakest solar events that can still trigger space weather effects near Earth, such as communications interruptions or spectacular northern lights displays.
The solar flare triggered a short-lived radio communications blackout on Earth that registered as an R2 event (on a scale of R1 to R5), according to space weather scales maintained NOAA, Fox added.
When aimed directly at Earth, major solar flares and coronal mass ejections can pose a threat to astronauts and satellites in orbit. They can interfere with GPS navigation and communications satellite signals in space, as well as impair power systems infrastructure on Earth.
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