[DOC] [TLE] Safety of Nuclear Powered Missions - Space Safety Magazine [PAR] Oct 21, 2011 ... For example, the Cassini spacecraft was equipped with three RTGs ... The 
Galileo spacecraft launched in 1989 was equipped with a 570 watts power RTG. 
... final trajectory insertion, and space flight involve certain risks of failure. .... The 
spokesmen must effectively communicate with the concerned public. [DOC] [TLE] Space Power - NASA Science [PAR] Sep 3, 2002 ... A probe like Ulysses needs a couple hundred watts of power to ... need to 
produce thrust using very little fuel because of weight restrictions. .... If we could 
learn how to use such antimatter safely, we could impinge some on a... [DOC] [TLE] NASA's Plutonium Problem Could End Deep-Space Exploration ... [PAR] Sep 19, 2013 ... In 1977, the Voyager 1 spacecraft left Earth on a five-year mission to explore ... 
How the U.S. Tested the Safety of Nuclear Batteries ... None of this would be 
possible without the spacecraft's three batteries filled with plutonium-238. .... 
technology, while crucial to the design, worries some space scientists. [DOC] [TLE] Chapters 3-5 - Idaho National Laboratory [PAR] system weight, all the while striving for the highest level of safety. ... roughout the 
1980s, development and production of the new GPHS-. RTG for the Galileo and 
Ulysses missions were the primary focus for DOE. With its modular heat ... In 
1980, DOE contracted with Fairchild Space and Electronics Company to develop 
and... [DOC] [TLE] GPHS-RTG - Wikipedia [PAR] GPHS-RTG or General Purpose Heat Source  Radioisotope Thermoelectric 
Generator, is a specific design of the Radioisotope Thermoelectric Generator (
RTG) used on US space missions. The GPHS-RTG was used on Ulysses (1), 
Galileo (2), Cassini-Huygens (3), ... The GPHS-RTG units used on spacecraft 
were not created by NASA. [DOC] [TLE] Powering Space Exploration: U.S. Space Nuclear Power, Public ... [PAR] deep space probes but it has also been used on some Earth-orbital and lunar ... 
fuel produces heat which flows through the thermocouples to the heat sink; ... and 
safety during all phases of operations during launch and accident .... mission to 
Jupiter contained two RTGs, while Ulysses had one RTG to power its systems. [DOC] [TLE] Potential Health Risks from Postulated Accidents Involving the Pu ... [PAR] Challenger ripped apart this shuttle and caused the Ulysses spacecraft to ... The 
Interagency Nuclear Safety Review Panel (INSRP), an independent ... of up to 
several hundred watts of electrical power for several years, the space probes 
travel too ... Plutonium-238, with a half-life of 87.7 years, was first created 
artificially by... [DOC] [TLE] Ulysses overview / Space Science / Our Activities / ESA [PAR] Aug 13, 2013 ... Ulysses is the first mission to study the environment of space above and below ... 
the Sun and produces a huge bubble in space called the heliosphere. ... 
Missions such as Pioneers 10 and 11 showed the way to some ... using a 
European spacecraft with half the instruments on board from the United States. [DOC] [TLE] Nuclear Powered Space Missions - Past and Future by Regina ... [PAR] In a document about the Ulysses mission, ESA/ESTEC (European Space ... 
Systems for Nuclear Auxiliary Power (SNAP)-RTG to the Multi-Hundred Watt (
MHW)-RTG, to the ... "The Cassini spacecraft and the Huygens Probe will use 
approximately 117 .... Thermionic fuel elements (TFE's) for 'TOPAZ' reactors were 
designed,... [DOC] [TLE] Nuclear Power Sources and Future Space Exploration - Chicago ... [PAR] Jun 1, 2005 ... electricity ("We"), as opposed to the mere tens or hundreds of watts ... extensive 
public participation and transparency in the safety reviews and ... spacecraft 
instruments, and (perhaps because both use certain ... only reactor-based power 
sources, but also any system that utilizes heavy elements such as. [DOC] [TLE] Cassini Controversy | Mother Jones [PAR] Sep 30, 1997 ... It has all the elements of a sensational story: A nerve-racking flyby of Earth two ... 
scenario, some 200,000

Question: Some worried about the safety of using this element to produce wattage for the Ulysses Space Probe
Answer: Plutonium