Jumat, 17 Juli 2009

Aktivitas Alam (NASA)

AURORA ALERT SERVICESubscribe to the Borealis 2000 Aurora Alerts and receive free e-mail notifications about possible auroral activity at middle and low latitudes. During periods of strong geomagnetic storm activity, the Northern Lights - aka Aurora Borealis - can sometimes be seen as far south as California, Arizona or the Alps in Europe.


CALIFORNIA AURORA - July 27, 2004High, middle and low latitude regions in North America witnessed strong auroral activity following the arrival of a strong coronal mass ejection late on July 26 (associated with a long-duration M1 solar flare on July 25). Low latitude sky watchers in Utah, Nevada and California witnessed auroral activity early on July 27.

NORTHERN LIGHTS IN CALIFORNIA - October 29, 2003A historic geomagnetic storm: Two powerful coronal mass ejections associated with X17.2 and X10.0 solar flares impacted the Earth on October 29 and 30, followed by severe to extreme geomagnetic storm conditions. Spectacular auroral displays have been observed as far south as California, Arizona, Texas and Florida.

THE PLANETARY ALIGNMENT OF SPRING 2002Bright Jupiter, yellow Saturn, rusty-red Mars, blazing Venus and glimmering Mercury gathered for a brilliant show across the western evening sky. A fine crescent moon added to an already dazzling visual feast between May 13 - 16. The finest planetary conjunction for decades to come... Slide Show

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