[IRCA] Fw: Spacecraft to Study Mysterious Night-shining Clouds

["Art Blair" <artngwen@xxxxxxxxxx>]

Really big sun spot on the way!

Art...
Northboundbus, USA


----- Original Message ----- 
From: "SpaceWeather.com" <swlist@xxxxxxxxxxxxxxxx>
To: "SpaceWeather.com" <swlist@xxxxxxxxxxxxxxxx>
Sent: Wednesday, April 25, 2007 7:16 PM
Subject: Spacecraft to Study Mysterious Night-shining Clouds


> Space Weather News for April 25, 2007
> http://spaceweather.com
>
> NIGHT-SHINING CLOUDS:  NASA's AIM spacecraft left Earth Wednesday on a 
> two-year mission to study mysterious noctilucent (night-shining) clouds. 
> Hovering at the edge of space, these clouds were first noticed in the 19th 
> century; they are remarkable for their electric-blue color and sharp, wavy 
> ripples. In recent years noctilucent clouds have been growing brighter and 
> spreading. What causes them? Theories range from space dust to global 
> warming. For the next two years, AIM will scrutinize the clouds from Earth 
> orbit to learn what they may be telling us about our planet.  Visit 
> http://spaceweather.com for more information about the AIM mission, 
> pictures of noctilucent clouds and observing tips.
>
> SOLAR ACTIVITY:  After a month of uninterrupted quiet, solar activity may 
> be on the rise.  A new sunspot is emerging and it appears to be a big one. 
> The spot's potential for flares will become clear as the region turns 
> toward Earth in the days ahead. Check http://spaceweather.com for updates.
>
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