By William Swindell, Eric Burgess, Richard O. Fimmel
"Pioneer 10 is the 1st spacecraft to fly past the orbit of Mars and during the Asteroid belt, it made the 1st sequence of "in situ" measurements of Jupiter's atmosphere, it supplied the 1st close-up photographs of the enormous planet and at last, Pioneer 10 is the 1st man-made item to go away the sunlight process. Pioneer eleven is the 1st spacecraft to fly to the ringed planet Saturn."--Foreword.
summary: "Pioneer 10 is the 1st spacecraft to fly past the orbit of Mars and during the Asteroid belt, it made the 1st sequence of "in situ" measurements of Jupiter's surroundings, it supplied the 1st close-up photographs of the large planet and eventually, Pioneer 10 is the 1st man-made item to go away the sun procedure. Pioneer eleven is the 1st spacecraft to fly to the ringed planet Saturn."--Foreword
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And the great turmoil in Jupiter's processes, coupled with the high speed of planetary rotation, provides an extreme model for the study of jet streams and weather in quieter planetary atmospheres such as the Earth's. The satellites of Jupiter represent a veritable Solar System in miniature, even to the densities of the satellites, like the planets, decreasing with distance from the central body. Thus, their for20 mation may have paralleled the formation of the Solar System. Astronomers are questioning whether these satellites are Earth-like planetary bodies, or more like giant snowballs.
Knowledge about these other planets is important to our understanding of our own planet, its 19 10 Figure 1-20. The planet Saturn will be visited by Pioneer 11 in 1979 and later by a more advanced spacecraft, Manner Jupiter-Saturn. : Catalina Observatory, University ofArizona) past and its future. Such knowledge and understanding might be vital to the long-term survival of the human species if people are to adapt to inevitable natural and man-caused changes to the Earth's environment. Mankind might be able to predict long-term changes to the terrestrial environment and prepare for them.
The RTGs (Figure 3-5) are on the opposite side of the spacecraft from the scientific instrument compartment to reduce the effects of their neutron radiation on the instruments. Mounted two each on the end of each boom, these four RTGs developed about 155 watts of electrical power at launch, which decayed to approximately 140 watts by the time the spacecraft reached Jupiter. One hundred watts output is expected five years after launch. The depletion of power is not from the nuclear source itself but from deterioration of the junctions of the thermocouples which convert heat into electricity.