[MIham] Geomagnetic Megastorm

[Frank]

Space Weather News for Sept. 2, 2009
http://spaceweather.com

GEOMAGNETIC MEGASTORM: Northern Lights swept over Cuba and Hawaii. Telegraph 
offices caught fire.  Earth's magnetic field shook for nearly a week. That's 
what happened 150 years ago today when our planet experienced a shocking 
"geomagnetic megastorm."  Could it happen again? Today's story on 
http://spaceweather.com explores the possibilities.

VANISHING MOONS OF JUPITER:  Tonight, Sept. 2nd and 3rd, for the first time 
in many years, the moons of Jupiter are going to disappear. At least that's 
how it will seem when Io, Europa, Ganymede and Callisto line up in front of 
and behind the giant planet. A casual look through a backyard telescope will 
show no moons at all. The 2-hour vanishing act begins at 9:43 p.m PDT on 
Sept. 2nd (4:43 UT on Sept. 3rd). Check http://spaceweather.com a sky map, 
animations and more information.


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