Rover (IMAGE) NASA/Johnson Space Center Caption This Paenibacillus eligii bacteria was found on the Mars Exploration Rover prior to launch in 2004 at the Jet Propulsion Laboratory, Pasadena, CA. The antimicrobials produced by this bacteria can fight a wide variety of fungi and bacteria. Credit NASA Usage Restrictions NASA 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.