Yes.See #21.
Even so, and to answer your questions, yes, up to perhaps 100 billion.
But the population will never get that large, because people (women) just don’t want to have more than couple of kids. Kids are very expensive. As even the third world is better fed and cared for medically, the number of births per women crashes to less than 2.
If you love data and analysis, watch Doctor Hans Rosling’s Ted Talk, where he explains it all: https://www.youtube.com/watch?v=FACK2knC08E
And outer space is full of ice. Which is frozen H2O. Which = water, fuel and air to breathe.