A coronal hole is an opening in the sun's magnetic field through which gas can easily escape into space.

The STEREO solar observation satellites has just released the first full-globe 360^o image of the Sun ever obtained

NASA's THEMIS spacecraft combined with computer models have helped track the origin of the energetic particles in Earth's magnetic atmosphere that appear during a kind of space weather called a substorm.

So you think the Sun i quiet these days? This image from the SOHO shows the eruption of a coronal mass ejection (CME) an energized bubble of plasma from the Sun's atmosphere in the general direction of Earth on August 7, 2010.