RAISONS DE COMMUNICATION HF DIFFICILES

Ceci explique les difficultés de propagation et de communication avec nos navigateurs...


Nycole



Space Weather News for May 2, 2016
http://spaceweather.com
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NEGATIVE MAGNETIC FIELDS SPARK AURORAS: For the past three days Earth has been passing through a region of interplanetary space filled with negative-polarity magnetic fields. This has caused intermittent geomagnetic storms and beautiful auroras around both poles. Visit http://spaceweather.com for pictures and more information about this phenomenon.

"SPACE LIGHTNING" SIGHTED OVER THE CARIBBEAN: Sprite season is definitely underway. Only a few days after a widespread display appeared over Texas, more sprites have popped up near Puerto Rico. This time the exotic forms of upper atmospheric electricity were sighted dancing above the sea instead of land. Learn more about land-vs-sea sprites at http://spaceweather.com.