Columns in Magnetic Field (IMAGE) NASA/Johnson Space Center Caption (a) Position of the columns in the magnetic field. (b) View of the structures that form after toggling the field. Condensed colloidal columns are the dark regions. (c) The field is toggled on and off for more than one hour. Credit NASA 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.