LEDs Light up Plants for Space Travel (IMAGE) Purdue University Caption A study by Purdue University researchers showed that LEDs are an efficient light source for growing crops in space. Credit Lucie Poulet Usage Restrictions Credit Lucie Poulet 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.