Question for Astrophysicists: if a point were to travel along a straight line, would it be possible for that point to travel indefinitely without encountering solid mass, given that point could travel through any density of gas/ plasma less than infinity?
by 
negativespace000
ANSWERS: 3
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No, because the object will eventually succumb to decay, even if it could pass through gas, plasma or other mass, it would eventually dissipate. Everything in the universe is subject to decay, even light.
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Further to the other answer, it isn't really an astrophysics question.
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Well the answer is yes if the point is travelling sufficiently slowly. For instance, it is reasonably likely that Voyager-1 will NEVER meet anything... always assuming humans won't puposely track it down bring it back and put it in the Marsport museum in 2053.
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