One of the most interesting things to come out of the Voyager experiments, according to Voyager scientist Andrew Ingersoll of Caltech, is the measurement of Saturn's internal heat. Before the Voyager 1 experiments, Saturn didn't fit with science's view of the solar system, he noted.
‘Early ground-based observations and Pioneer spacecraft observations indicated that Saturn had too much internal heat,’ said Ingersoll. ‘One outrageous possibility is that Saturn is only 2 billion years old and therefore has not lost the expected amount of heat. Such a possibility, if true,’ he continued, ‘would shatter our understanding of solar system formation.’