Image of Solar Wind (image) NASA/Goddard Space Flight Center Share Print E-Mail Caption This image from the Solar and Heliospheric Observatory shows streaks of bright light. This represents material streaming out from the Sun, which is obscured in this picture by the central red disk so that its light doesn't overwhelm the fainter material around it. Scientists want to better understand what causes this regular outflow, known as the solar wind. Credit NASA/SOHO Usage Restrictions None Share Print E-Mail 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.