4 ms·
> 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
by denton-scratch 3y ago
> 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 https://en.wikipedia.org/wiki/Outer_space
- aerique 3y agoYes, but that's intergalactic space not interstellar space. We've not even begun exploring the latter :-)
- meindnoch 3y agointergalactic != interstellar
- denton-scratch 3y agoWell, 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.