A solar flare and coronal mass ejection in mid-July 2012 raised the possibility of geomagnetic storms and auroras.
Published Jul 14, 2012
This ultraviolet image, captured by NASA’s Solar Terrestrial Relations Observatory (STEREO) Ahead spacecraft on February 12, 2010, shows solar storms brewing in two active areas of the Sun.
Published Mar 20, 2010
Fiery arcs rise above an active region on the surface of the Sun in this pair of images of a coronal mass ejection on January 27, 2010.
Published Feb 13, 2010
Solar activity creates radio noise on Earth and increases the chances of auroras.
Published Mar 7, 2012
On January 23, 2012, satellites observed the most powerful solar radiation storm since 2005.
Published Jan 24, 2012
NASA's newest sun-monitoring mission captures a detailed view of a prominence erupting on March 30, 2010.
Published Apr 22, 2010
Fifteen years ago this month, the European Space Agency and NASA launched SOHO, a satellite that fundamentally changed our understanding of the Sun and how it affects our planet.
Published Dec 7, 2010
Our Sun experienced fewer sunspots in 2008 than it had since the 1957 launch of Sputnik. As of Sun-Earth Day on March 20, 2009, the Sun was continuing its quiet pattern.
Published Mar 20, 2009
