----- Original Message ----- From: "SpaceWeather.com" <[EMAIL PROTECTED]> To: "SpaceWeather.com" <[EMAIL PROTECTED]> Sent: Friday, February 16, 2007 4:51 PM Subject: Aurora Mystery Mission
> Space Weather News for Feb. 16, 2007 > http://spaceweather.com > > 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. > > If a friend sent you this newsletter and you would like to subscribe, > click here: http://spaceweather.com/services/ > > To unsubscribe click here: > http://www.spaceweather2.com/u?id=423219R&n=T&l=spaceweather > or send a blank email to [EMAIL PROTECTED] > > _______________________________________________ IRCA mailing list [email protected] http://montreal.kotalampi.com/mailman/listinfo/irca Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers For more information: http://www.ircaonline.org To Post a message: [email protected]
