Plasma Bubbles (IMAGE) American Geophysical Union Caption Tendrils of low-density, charged particles are called plasma bubbles, and turbulence at their edges can skew radio frequency waves passing through them. Applied Physics Laboratory researchers provide evidence that plasma bubbles may have contributed to the communications outages during a 2002 Afghanistan battle. Credit NASA Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.