Wednesday, September 02, 2009

Geomagnetic Megastorm

Source - Space Weather News for Sept. 2, 2009:

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 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 a sky map, animations and more information.

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