[ Back to EurekAlert! ]

PUBLIC RELEASE DATE:
7-Feb-2013

[ | E-mail ] Share Share

Contact: Susan Hendrix
Susan.m.hendrix@nasa.gov
301-286-7745
NASA/Goddard Space Flight Center
@NASAGoddard

NASA sees the sun produce 2 CMEs

IMAGE: The second of two CMEs from the evening of Feb. 5, 2013, can be seen bursting away from the sun in the upper left hand side of this image, which...

Click here for more information.

In the evening of Feb. 5, 2013, the sun erupted with two coronal mass ejections or CMEs that may glance near-Earth space. Experimental NASA research models, based on observations from the Solar Terrestrial Relations Observatory (STEREO) and ESA/NASA's Solar and Heliospheric Observatory, show that the first CME began at 7 p.m. EST and left the sun at speeds of around 750 miles per second. The second CME began at 10:36 p.m. EST and left the sun at speeds of around 350 miles per second. Historically, CMEs of this speed and direction have been benign.

Not to be confused with a solar flare, a CME is a solar phenomenon that can send solar particles into space and reach Earth one to three days later.

VIDEO: Solar material can be seen blowing off the sun in this video captured by NASA's Solar Dynamics Observatory on the night of Feb. 5, 2013. This active region on the...

Click here for more information.

Earth-directed CMEs can cause a space weather phenomenon called a geomagnetic storm, which occurs when they connect with the outside of the Earth's magnetic envelope, the magnetosphere, for an extended period of time. In the past, CMEs at this strength have had little effect. They may cause auroras near the poles but are unlikely to disrupt electrical systems on Earth or interfere with GPS or satellite-based communications systems.

###

NOAA's Space Weather Prediction Center is the United States Government official source for space weather forecasts, alerts, watches and warnings.



[ Back to EurekAlert! ] [ | E-mail Share Share ]

 


AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert! system.