Sun  ID: 11257

CMEs Galore

On April 20, 2013, at 2:54 a.m. EDT, the sun erupted with a coronal mass ejection (CME), a solar phenomenon that can send billions of tons of solar particles into space that can affect electronic systems in satellites. Experimental NASA research models show that the CME left the sun at 500 miles per second and is not Earth-directed. However, it may pass by NASA's Messenger and STEREO-A satellites, and their mission operators have been notified. There is, however, no particle radiation associated with this event, which is what would normally concern operators of interplanetary spacecraft since the particles can trip computer electronics on board. When warranted, NASA operators can put spacecraft into safe mode to protect the instruments from the solar material.

The same region of the sun erupted with another coronal mass ejection (CME) at 3:54 a.m. on April 21, 2013. Experimental NASA research models show the CME left the sun at speeds of 550 miles per second. The models show that the CME will also pass by NASA's Messenger and the flank of the CME may graze STEREO-A.

Another coronal mass ejection (CME) has erupted from the sun, headed toward Mercury and NASA's Messenger spacecraft. The CME began at 12:39 p.m. EDT on April 21, 2013. Experimental NASA research models show that the CME left the sun at 625 miles per second and that it will catch up to the CME from earlier on April 21 before the combined CMEs pass Messenger. There is also chance that the combined CMEs will give a glancing blow to STEREO-A.

 

Related


For More Information

http://www.nasa.gov/mission_pages/sunearth/news/News042013-cme.html

http://www.nasa.gov/mission_pages/sunearth/news/gallery/CMEs_galore.html


Credits

Steele Hill Ph.D. (Wyle Information Systems): Video Editor
Genna Duberstein (USRA): Video Editor
Scott Wiessinger (USRA): Producer
Karen Fox (ASI): Writer
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Missions:
SDO
STEREO

This item is part of this series:
Heliophysics Breaking News

Goddard TV Tape:
G2013-021 -- 2013 Heliophysics Breaking News

Keywords:
SVS >> Sun
GCMD >> Earth Science >> Sun-earth Interactions
SVS >> Space Weather
SVS >> SDO
SVS >> Heliophysics
SVS >> STEREO
NASA Science >> Sun
GCMD >> Earth Science >> Sun-earth Interactions >> Solar Activity >> Coronal Mass Ejections

GCMD keywords can be found on the Internet with the following citation: Olsen, L.M., G. Major, K. Shein, J. Scialdone, S. Ritz, T. Stevens, M. Morahan, A. Aleman, R. Vogel, S. Leicester, H. Weir, M. Meaux, S. Grebas, C.Solomon, M. Holland, T. Northcutt, R. A. Restrepo, R. Bilodeau, 2013. NASA/Global Change Master Directory (GCMD) Earth Science Keywords. Version 8.0.0.0.0