RocketSTEM Issue #7 - May 2014 | Page 58

named Ganymede, might have ice - the moon’s ocean, and showing it to the bottom. What’s more, the - - - to harbor a thick ocean sandice, one on top and one on bottom. “Ganymede’s ocean might be - - - - - may seem strange that salt can sandwich. “We don’t know how long the provides new theoretical evidence by adding plain old table salt to a - - - reach this stable state. arisen on the icy moon. Scientists say that places where water and The models get more complicat- - - oceans like Ganymede’s, the ice ter. - - so dense that it is heavier than wasea. The densest and heaviest ice - - 56 56 ments and more detailed m odelanswers. - lightest ice is on top, and the salti- Agency is developing a space mislisto and Ganymede in the 2030s. www.RocketSTEM .org