Sun ID: 11207

The Sun Produces Two CMEs

Released on February 7, 2013

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.

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.

The pair of February 5 eruptions as seen by the Solar Dynamics Observatory's AIA instrument in 304 angstrom light. This video covers 6:30 pm EST on February 5 through 12:00 am on February 6 and uses a 36 second imaging cadence.

The pair of February 5 eruptions as seen by the Solar Dynamics Observatory's AIA instrument in 171 angstrom light. This video covers 6:30 pm EST on February 5 through 12:00 am on February 6 and uses a 36 second imaging cadence.

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 was captured by the joint ESA/NASA mission the Solar Heliospheric Observatory (SOHO) at 11:12 p.m. EST. The sun itself is obscured in this picture &mdash taken by an instrument called a coronagraph — so that its bright light doesn't drown out the picture of the dimmer surrounding atmosphere, called the corona.

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 was captured by the joint ESA/NASA mission the Solar Heliospheric Observatory (SOHO) at 1:54 a.m. EST on February 6. The sun itself is obscured in this picture &mdash taken by an instrument called a coronagraph — so that its bright light doesn't drown out the picture of the dimmer surrounding atmosphere, called the corona.

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 was captured by the joint ESA/NASA mission the Solar Heliospheric Observatory (SOHO) at 11:00 p.m. EST. The sun itself is obscured in this picture &mdash taken by an instrument called a coronagraph — so that its bright light doesn't drown out the picture of the dimmer surrounding atmosphere, called the corona.

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 was captured by the joint ESA/NASA mission the Solar Heliospheric Observatory (SOHO) at 11:24 p.m. EST. The sun itself is obscured in this picture &mdash taken by an instrument called a coronagraph — so that its bright light doesn't drown out the picture of the dimmer surrounding atmosphere, called the corona.

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 was captured by the joint ESA/NASA mission the Solar Heliospheric Observatory (SOHO) at 11:36 p.m. EST. The sun itself is obscured in this picture &mdash taken by an instrument called a coronagraph — so that its bright light doesn't drown out the picture of the dimmer surrounding atmosphere, called the corona.

The first 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 was captured by the joint ESA/NASA mission the Solar Heliospheric Observatory (SOHO) at 8:54 p.m. EST. The sun itself is obscured in this picture &mdash taken by an instrument called a coronagraph — so that its bright light doesn't drown out the picture of the dimmer surrounding atmosphere, called the corona.

Credits

Tom Bridgman (Global Science and Technology, Inc.): Lead Animator
Scott Wiessinger (USRA): Animator
Scott Wiessinger (USRA): Producer
Karen Fox (ADNET Systems, Inc.): Writer

Please give credit for this item to:
NASA's Goddard Space Flight Center