image: Solar material repeatedly bursts from the sun in this close-up captured on July 9-10, 2016, by NASA's Solar Dynamics Observatory, or SDO. The sun is composed of plasma, a gas in which the negative electrons move freely around the positive ions, forming a powerful mix of charged particles. Each burst of plasma licks out from the surface only to withdraw back into the active region -- a dance commanded by complex magnetic forces above the sun. SDO captured this video in wavelengths of extreme ultraviolet light, which are typically invisible to our eyes. The imagery is colorized here in red for easy viewing. view more
Credit: NASA/SDO/Goddard Space Flight Center/Joy Ng