At present most of the scientist think that-JUPITER'S THREE LARGEST ICY MOON may be a suitable place for life.For better understand of those moons conditions where life can form & grow,scientist want to explore them.Europa, Callisto &Jupiter's largest moon Ganymede are all believed to have liquid oceans beneath their icy shells, as well as organic chemistry and possible sources of energy beyond the dim amount of sunlight that reaches their distant surfaces. These are all conditions that may be required for life in much more distant planetary bodies.Some time ago most of the scientist thought these were dead.But planetary scientist Athena Coustenis, with the Paris Observatory in France,said at The conference of Astrobiology that a mission will be start to explore nickname JUICE very soon,To study the three moons.