Word: scoot
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Dates: during 2000-2009
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...scoot around the solar system and return within a few years, you need a spacecraft that will cruise at 100 miles a second. At that speed you will get to Mars in 10 days, to Pluto in 16 months. We can imagine a spacecraft carrying a big area of thin film to collect solar energy, with an ion-jet engine to produce thrust powerful enough to boost a spacecraft to a speed of 100 miles a second. It is also possible to build a nuclear-powered jet to do the same job, if the political objections to nuclear spacecraft...