Cassini space probe of the National Aeronautics and Space Administration (NASA) has helped the space agency learn new things about Saturn and its moons. Previously, researchers from NASA suspected that the south pole of Enceladus, sixth-largest moon of Saturn, has liquid water. Now, after studying data collected by the probe, the space agency found that not only the south pole of the moon, but the entire moon is covered with water.

Water on the moon is sealed in by the crust, according to NASA. Researchers looked at photos captured by the probe in last seven years, and found a distinct wobble. They said the discovered wobble is exhibited by Enceladus when it orbits Saturn.

The researchers considered a number of different models to determine the source of wobble. The model which made sense was the one which showed the moon surrounded by a crust of ice. Beneath the crust, there could an ocean, as per the model.

Matthew Tiscareno, Cassini participating scientist at California's SETI Institute and co-author of the new research on the Saturn’s moon published in the journal Icarus, said, “If the surface and core were rigidly connected, the core would provide so much dead weight the wobble would be far smaller than we observe it to be. This proves there must be global layer of liquid separating the surface from the core”.

Temperatures on Enceladus could reach to minus 201 degrees Celsius. According to Space.com, there are possibilities that the tiny moon could harbor extraterrestrial life.