ARLA/CLUSTER: Explosão Solar mais forte registada este ano

[João Costa > CT1FBF]

X-class Solar Flare

Long-lived sunspot AR1967 returned to the Earthside of the sun on Feb.
25th and promptly erupted, producing an X4.9-class solar flare.

This is the strongest flare of the year so far and one of the
strongest of the current solar cycle.

Check http://spaceweather.com for updates about this eruption and the
possibility of more to come.