On 5:24 a.m. EDT on May 17, 2013, the sun erupted with an Earth-directed coronal mass ejection or CME, a solar phenomenon that can send billions of tons of solar particles into space.
On the night of April 24 and the morning of April 25, 2013, the sun erupted with two coronal mass ejections (CMEs), solar phenomena that can send billions of tons of solar particles into space.
The sun erupted three times over April 20 and 21, sending billions of tons of solar particles into space. The eruptions (called CMEs) were not Earth-directed.
Friday's fast moving CME has reached Earth and sparked a mild geomagnetic storm. Will higher latitude skies be turned green for St. Patrick's Day?
A small, Earth-directed Coronal Mass Ejection erupted early this morning.
One of the two slow-moving ejections from Jan. 23 is Earth-directed. In the past, CMEs of this speed have not caused substantial geomagnetic storms.
On Jan. 13, 2013, at 2:24 a.m. EST, the sun erupted with an Earth-directed coronal mass ejection or CME. The CME left the sun at speeds of 330 miles per second and is expected to impact Earth around Jan. 16.
On Dec. 15, 2011, NASA's Solar Dynamics Observatory captured footage of Comet Lovejoy approaching the sun. The images and data collected by NASA's solar observing fleet can help scientists learn more about the sun itself.
On Nov. 20, 2012, at 7:09 a.m. EST, the sun erupted with a coronal mass ejection.
On Sept. 1, 2012, the two STEREO spacecraft and Earth were almost exactly equidistant, each with a direct view of a different third of the sun.
By understanding the morphology, density and temperature of coronal cavities scientists can better understand eruptions on the sun and the space weather that can disrupt technologies near Earth.
On September 1, 2012, a long, whip-like filament erupted on the sun. The eruption, called a coronal mass ejection, caused aurora near Earth on September 3.
On July 23, 2012, a massive cloud of solar material erupted off the sun. NASA Goddard scientists clocked the giant cloud, known as a coronal mass ejection, or CME, at speeds between 1,800 and 2,200 miles per second.
On July 14, 2012 a CME crashed into Earth's magnetic field and triggered the most sustained display of auroras in years, giving the world a taste of things to come when Solar Max arrives in 2013.
Scientists find giant plumes on the sun, newly named "coronal cells" that are over 18,000 miles across, looking like candlesticks on a birthday cake, and might help explain coronal holes.
Public votes STEREO mission as NASA's biggest accomplishment of 2011.
Another view of Comet Lovejoy's solar approach taken by Hinode.
The sun sent out two different kinds of solar activity on November 3, 2011 in different directions: an X.19 solar flare and a particularly bright CME.
On Oct. 25, 2006 STEREO launched to do something never done before: see the entire sun simultaneously.
For the first time, a spacecraft far from Earth has turned and watched a solar storm engulf our planet.