NASA photo from Cassini probe is first-ever of liquid on another world , says scientist . The image shows a large lake in the Saturnian moon Enceladus that may be covered with water ice and other liquids. Planets with liquid are thought to be more likely to develop life . Scientists have been studying Titan because of its similarities to Earth .
NASA photo from Cassini probe is first-ever of liquid on another world , says scientist . Image shows sun reflecting from a lake on Saturn 's moon , Titan . Planets with liquid are thought to be more likely to develop life . Scientists have been studying Titan because of its similarities to Earth .