NASA says there may be alien life on Saturn's icy moon enceladus and Jupiter's moon Europa.Two moons - one saturn's, the other Jupiter's - show evidence of the ingredients needed to support life, according to NASA . Saturn's ice-crusted moon enceladus may now be the single best place to go to look for life beyond Earth. The findings on Saturn's moon enceladus were captured by the cassini space probe. It has been orbiting Saturn for 13 years. NASA scientists said huge plumes spewing gases on the surface of enceladus indicate the presence of hydrogen gas. Hydrogen gas could provide a chemical energy source for microbial life. Microbes - if any exist there - could use it to obtain energy by combining the hydrogen with carbon dioxide dissolved in the water. On Jupiter's moon europa, the hubble telescope observed "probable" plumes erupting last year. It could also indicate a form of chemical energy that life can feed on. Evidence of a plume was observed in 2014 by hubble. After the recent findings, Thomas Zurbuchen, associate administrator for NASA's science mission directorate said "this is the closest we've come, so far, to identifying a place with some of the ingredients needed for a habitable environment,"