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SPACE.com Cam: Aurora
posted: 30 June 2005
08:12 am
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Untitled DocumentThis image is updated every 10 minutes. More about this image. More SPACE.com Cams 
|  Aurora Forecast
Find out what's coming in our complete Space Weather Forecast!
| | POES
Instruments on board the NOAA Polar-orbiting Operational Environmental Satellite (POES) continually monitor the power flux carried by the protons and electrons that produce aurora in the atmosphere. The POES satellite is operated by NOAA. | About this aurora image Charged particles streaming fom the Sun excite oxygen and nitrogen in Earth's atmosphere to create the aurora borealis, or Northern Lights. The same condition creates the aurora australis, or Southern Lights. This image shows the current extent and position of auroral activity in the northern hemisphere, based on measurements taken during the most recent polar pass of the NOAA POES satellite. The images gives a guide to the possibility that the aurora is located near a given location, activity that may or may not be visible from the surface. Auroral activity is related to the power flux shown in the image, with yellow, orange and red indicating higher levels. Black areas represent regions where no satellite data was collected. The red arrow points toward local Noon -- directly at the Sun. Note that auroras are very difficult to predict. They are often only seen near the poles, but sometimes during a strong storm, with little warning, the Northern Lights can be visible as far south as Texas. -- Robert Roy Britt More SPACE.com Cams Don't Miss ... Other Cool Images
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