In this Tuesday, Jan. 7, 2014 image made available by NASA, a giant cloud of solar particles, a coronal mass ejection, explodes off the sun, lower right, captured by the European Space Agency and NASA's Solar and Heliospheric Observatory. The sun is obscured to show the atmosphere around it. The solar flare caused the cancellation of a launch to the International Space Station on Wednesday, Jan. 8, 2014. (AP Photo/ESA, NASA - SOHO)