ARLA/CLUSTER: As estranhas "Auroras Azuis" sobre a Escandinávia e a Rússia

[João Costa > CT1FBF]

Strange 'blue auroras' sighted

On Thursday night, strange bands and rings of blue light appeared over
parts of Scandinavia and Russia.

Was it a weird type of aurora? No geomagnetic storm was in progress.

The explanation may be a barrage of missiles fired during an overnight
Russian war game, spreading a blue-glowing cloud of rocket exhaust around
the Arctic Circle.

Photos and more information are highlighted on today's edition of
Spaceweather.com
<https://spaceweather.us11.list-manage.com/track/click?u=0c5fce34d5ca05f64a13d085d&id=affd011c81&e=f98eeb7cd6>
.
-------------- próxima parte ----------
Um anexo em HTML foi limpo...
URL: http://radio-amador.net/pipermail/cluster/attachments/20171030/270252f1/attachment.htm