: That's an excellent question. It depends on on it's phase properties - i.e.
: the interrelationship among solid, liquid and gas phases based on
: temperature and pressure. As zero pressure, water exists in only the solid
: and gasseous phases. There are plenty of materials where this is not the
: case. I think we can surmise that lava can coexist with vacuum since we
: know it happens on Io, Jupiter's largest moon. However, you do bring up an
: interesting point - liquid water cannot exist in a vacuum, as it seems to
: on Caroll Street Station. So that's 2 strikes against Bungie today.
Isn't Caroll Street one of the AMS variants? (I don't recall). If so, that's not water. It's not even sewage. That's "Jjaro goo", which is a completely unknown alien substance that just mostly resembles sewage.
