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I am building a sort of space odyssey and I was wondering about something...
In a DnD game I used to DM, Starfinder I believe it was called, there was this asteroids belt and in it was some sort of space river. At the time I thought nothing of it, now I am curious...
So here are my two QUESTIONS :
Could a river actually form naturally around a planet or in an asteroids belt ? If not, could you create one and how would you create it ?
For my second question, you can have infinite resources and time. I would like science-based answers : no magic, or deity please (this is for both questions).
Finnaly for a bonus question : could this river sustain any form of life ?
Post-scriptum : Hope I was clear enough. I am sorry if there are any mistakes. English is not my first language. Cheers !