QUESTION: Could you tell me if the Galileo mission can detect what happens with the H2O of the comet Shomaker-levi after it hits Jupiter surface. ANSWER from Glenn Orton on February 16, 1996: We cannot answer that directly. What we CAN do is measure how much water IS in Jupiter, so that we can figure out how much was in the comet vs how much was in Jupiter when the impacts took place.