Fast Neutron Spectrometer (IMAGE) NASA/Johnson Space Center Caption Seen center of the image, the Fast Neutron Spectrometer will help accurately detect neutrons in space. The neutrons are potentially harmful to humans. 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.