The Moon's Ina Caldera (IMAGE) Brown University Caption The feature known as Ina, as seen by NASA's Lunar Reconnaissance Orbiter, was likely formed by an eruption of fluffy 'magmatic foam,' new research shows. Credit NASA/GSFC/ASU 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.