Could life exist on Jupiter's moon Europa? There is an ocean of liquid water beneath the icy surface of Jupiter’s moon Europa. Europa is one of the four Galilean moons of Jupiter, in addition to Io, Ganymede, and Callisto. NASA just moved a step closer to answering that longstanding question. It's also one of the most talked about moons, as it has made several headlines over the years for its interesting characteristics, discovered through observation from various spacecrafts. This water would reveal the chemistry of the subsurface ocean and may contain microbes that live below. Europa is officially the sixth closest moon of the planet Jupiter and the sixth largest moon in the entire solar system. Europa: there may be life on Jupiter’s moon and two new missions will pave the way for finding it August 28, 2019 6.21am EDT Gareth Dorrian , University of Birmingham NASA scientists have suggested there could be life on one of Jupiter's moons (Image: PA) Europa, the largest of Jupiters moons, has been found to have water underneath it's surface (Image: PA) Although slightly smaller than the moon that revolves around planet Earth, the composition of Europa is what has scientists excited. Artist's concept image by NASA / JPL. For the first time, scientists have discovered the presence of water vapor above the surface on Europa, Jupiter's icy moon first visited by one of the Voyager probes 40 years ago. For instance, pictures of the moon's bright surface suggest it's relatively young, said the University of Arizona's Greenberg, author of Unmasking Europa: The Search for Life on Jupiter's Ocean Moon. The interior ocean in Jupiter's moon Europa may be able to sustain life, NASA scientists believe. Life on Europa: Water from a subsurface ocean on Jupiter's moon, Europa, could reach the surface through seeps or erupt from hot water vents. One of the best spots to look for life, NASA is slated to explore Jupiter's moon Europa in the next 10 years. Could it harbor conditions suitable for life? Scientists think that life may exist on Europa because there is evidence that liquid water may exist beneath its icy surface. Monica Grady, a British space scientist, says it is 'almost a racing certain' that Jupiter's moon Europa is harboring to alien life in its icy seas, but believes they are 'octopus' like creatures. Europa is pushed and pulled by the high gravity of Jupiter as well as by the gravity of Jupiter's other moons. The space agency announced Monday that it … Europa is the fourth largest moon of Jupiter.