MMRTG Magnetics Testing (image) DOE/Idaho National Laboratory Share Print E-Mail Caption The Mars Science Laboratory's radioisotope power system was fueled and tested at Idaho National Laboratory. Here, magnetic testing ensures that the electric field generated by the system is small enough that it won't interfere with the rover's scientific instruments. Credit Idaho National Laboratory 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.