QUESTION: What were some of the surprises in the Probe Data? ANSWER Jan 26, 1996: You can find a lot of information about the data from the probe on the web at http://ccf.arc.nasa.gov/dx/ I've copied some of it here for you. "The probe detected extremely strong winds and very intense turbulence during its descent through Jupiter's thickatmosphere. This provides evidence that the energy source driving much of Jupiter's distinctive circulation phenomena is probably heat escaping from the deep interior of the planet," Young said. "The probe also discovered an intense new radiation belt approximately 31,000 miles above Jupiter's cloud tops, and a veritable absence of lightning." The composition of Jupiter's atmosphere offered some surprises, according to project scientists. It contains significantly lower-than-expected levels of helium, neon, and certain heavy elements, such as carbon, oxygen and sulfur. The issue of the colors of Jupiter's atmosphere has been much-debated, but no consensus has developed from probe data to date. The probe encountered no solid objects or surfaces during it's entire 373-mile (600 km) journey. This was as expected for a gas-giant planet such as Jupiter. What are the implications of these findings? Most scientists believe that Jupiter has a bulk composition similar to that of the gas and dust cloud of the primitive solar nebula from which the planets and our Sun were formed, with added heavy elements from comets and meteorites. The probe's measurements may necessitate a re-evaluation of existing views of how Jupiter evolved from the solar nebula. For example, the lower-than-expected helium and neon levels on Jupiter relative to the Sun influence scientific understanding of the process of fractionation, the "raining out" of helium and neon during planetary evolution. It was very moving to attend the press conference and see scientists who had worked their entire careers on this mission, report the data they had found.