IBEX Spacecraft (IMAGE) NASA/Goddard Space Flight Center Caption Roughly the size of a card table, the Interstellar Boundary Explorer is the latest in NASA's series of low-cost, rapidly developed Small Explorers spacecraft. Credit NASA/Goddard Space Flight Center Conceptual Image Lab 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.