February 18, 2016

Coronal Mass Ejection: January 4, 2002

Coronal Mass Ejection

Another treatment of a fiery Coronal Mass Ejection (CME) with stunning, bright details in the ejected material. In this composite image, an EIT image of the Sun in extreme UV light, taken on January 4, 2002, was enlarged and superimposed on LASCO C2. In coronagraph images, direct sunlight is blocked by an occulter (covered by the Sun here) to reveal the surrounding faint corona.

Image Credit: NASA/SOHO
Explanation from: http://sohowww.nascom.nasa.gov/bestofsoho/images/suncombo2.html


  1. Wait, is the sphere the sun, and the swirl the ejected material?? The apparent volume ratio is extremely confusing :(

  2. The stuff coming out looks bigger because, in simple terms the sun is more compressed. Its like filling a balloon from a tank of compressed gas. You can blow a balloon much bigger than the container the gas came out of because it expands as it is released.