Jupiter has nearly 80 moons, including Io, Europa, Ganymede and Callisto, which are the four largest.
If proven true, researchers predict that any asymmetry in craters and thickness of the ice shell measured by satellites could be partially inaccurate.
The new moons bring Jupiter's total count to 79, making it the most moon-rich planet in our system.
They announced their discovery of microbes in the subglacial lake in 2013, receiving worldwide attention.
The latest discovery of 12 small moons brings the total to 79, the most of any planet in our solar system.
Jupiter’s 79 moons are the most of any planet in the solar system, followed by the 62 of Saturn.
Nasa's Juno spacecraft has sent the first-ever image of the gas giant Jupiter and three of its four moons to the Earth as it continues orbiting the planet.