<div dir="ltr"><br></div><br><div class="gmail_quote"><div dir="ltr">João Costa > CT1FBF <<a href="mailto:ct1fbf@gmail.com">ct1fbf@gmail.com</a>> escreveu no dia segunda, 12/11/2018 à(s) 11:54:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Space weather in wartime - a sunspot triggers naval mines<br>
<br>
Researchers studying declassified Naval records have found evidence<br>
that a big sunspot may have caused dozens or perhaps even thousands of<br>
naval mines to explode off the coast of Vietnam in 1972.<br>
<br>
The solar storms of August '72 were already legendary at NASA. These<br>
new findings suggest that the event might have been even more potent<br>
than previously thought.<br>
<br>
Learn more on today's edition of Spaceweather.com<br>
<br>
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