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A comment on Relativistic Spaceship. Parent comment

Re:Relativistic Spaceship by denton-scratch on Tuesday February 06, 2024 @05:14AM (#39272721)
> somewhere around a hundred atoms per cubic meter.

Wikipedia says that intergalactic space contains less than one hydrogen atom per cubic meter; and that most of the baryonic matter in intergalactic space consists of hydrogen and helium atoms. If I've understood it correctly...

https://en.wikipedia.org/wiki/Outer_space

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Re:Relativistic Spaceship by aerique on Tuesday February 06, 2024 @06:23AM (#39273142)
Yes, but that's intergalactic space not interstellar space. We've not even begun exploring the latter :-)
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Re:Relativistic Spaceship by meindnoch on Tuesday February 06, 2024 @08:52AM (#39274154)
intergalactic != interstellar
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Re:Relativistic Spaceship by denton-scratch on Tuesday February 06, 2024 @09:17AM (#39274375)
Well, I don't think the discussion was restricted to interstellar space; for example there's been quite a bit of chat about how long it would take, at 1G (on the astronaut's watch) to reach the edge of the (known) universe.
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