[FPSPACE] FW: Aurora Mystery Mission
ljk4 at msn.com
Sat Feb 17 11:12:33 EST 2007
>From: SpaceWeather.com <swlist at spaceweather.com>
>To: SpaceWeather.com <swlist at spaceweather.com>
>Subject: Aurora Mystery Mission
>Date: Fri, 16 Feb 2007 18:51:38 -0600
>Space Weather News for Feb. 16, 2007
>AURORA MYSTERY: Scientists have been watching and studying auroras for
>centuries. But if you thought everything is known about Northern Lights,
>you'd be wrong. One key mystery is the "auroral substorm." Sometimes, with
>no warning, gently shimmering pale auroras erupt in a riot of
>wildly-shifting colors. Why? The answer could reveal important new
>information about Earth's magnetosphere.
>On Saturday, Feb. 17, NASA plans to launch a fleet of five satellites into
>Earth orbit. The name of the mission is THEMIS and its goal is to crack
>the mystery of the auroral substorm. Visit Spaceweather.com over the
>weekend for launch photos and mission updates.
>MIRA VARIABLE: Meanwhile, 400 light years from Earth, a red giant named
>Mira has swelled larger than the orbit of Mars. The pulsating star is now
>at maximum brightness and can be seen with the naked eye after sunset.
>Brightness: 2nd magnitude, similar to the stars of the Big Dipper. Take a
>look, you may be seeing the future. Our own Sun could become a
>Mira-variable when it evolves to red gianthood five billion years from now.
>Visit http://spaceweather.com for sky maps and more information.
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