ARLA/CLUSTER: Fortes auroras boreais fotografadas no Alasca e regiões à volta do Polo Norte

[João Costa > CT1FBF]

 <http://spaceweathergallery.com/indiv_upload.php?upload_id=117183>

Labor Day geomagnetic storm

A G2-class geomagnetic storm is in progress on Sept. 7th as Earth moves
through a stream of fast moving solar wind.

Sky watchers in Alaska witnessed bright auroras before daybreak on Monday,
and they might see them again after nightfall. High-latitude observers
everywhere should be alert for Northern Lights.

Check http://spaceweather.com for images and updates.
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