Answer 2:
It depends on how fast you're going. However,
to give you an idea, NASA launched the Voyager
probe in 1977 with the intention of leaving the
solar system, and it took 36 years to reach the
end of the solar system! It only left the solar
system in 2013, at which point it was traveling at
roughly 17 km/s (11 miles per second, or 38000
mph!)
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