Solar Probe (IMAGE) Johns Hopkins University Caption Artist's concept of NASA's Solar Probe spacecraft making its pass toward the sun, where it will study the forces that create solar wind. Preliminary designs include a 9-foot-diameter, 6-inch-thick, carbon-foam-filled solar shield atop the spacecraft body, and two sets of solar arrays that would retract or extend as the spacecraft swings toward or away from the sun -- making sure the panels stay at proper temperatures and power levels. Credit NASA/Johns Hopkins University Applied Physics Laboratory 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.