ARLA/CLUSTER: Actividade Solar intensifica-se através de enorme mancha

[João Costa > CT1FBF]

Solar activity intensifies as huge sunspot grows

Sunspot AR2665, which emerged just as few days ago, has mushroomed
into a behemoth nearly as wide as the planet Jupiter.

On July 9th the fast-growing sunspot produced an M-class solar flare
and a short-lived shortwave radio blackout over east Asia and
Australia.

Stronger flares and Earth-directed CMEs may be in the offing as AR2665
turns toward our planet in the days ahead.

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