'uncharted spaces' is correct and usable in written English.
You could use it to refer to a place or area that has not yet been explored or charted. For example, "They decided to venture into uncharted spaces, hoping to discover something new."
This is surely in play today: the right to talk to whoever you please, the right to read and wonder, the right to pursue an argument into uncharted spaces, the right to challenge the state or the church and its orthodoxy in the public square.
In our current hyper-connected age, there are very few heretofore uncharted spaces left in the extreme metal atlas.
Vast uncharted spaces inhabited by strange people called 905ers and full of malls, strip malls, industrial malls, mini-malls and three zillion houses.
They want to dream because the space for that — the uncharted space — has narrowed.
He does know however, that players will be encouraged to venture deeper into uncharted space.
Note Ms. Falco's tentative, imbalanced walk; she always appears to be measuring uncharted space with her feet.
The delineation of this uncharted space – between public and private, between what seems and what is – defines the moral core of memoir as a form.
Better still if the companies make not just a case for safety, but also a case for their ability to react when things do go wrong, and they find themselves in the uncharted space between the spines of well developed technology.
It is uncharted space on the edges of current knowledge with nothing in it, yet the place where the new ideas emerge quickly.
Arriving in uncharted space, the crew of the Autumn discover a massive ringworld orbiting a gas giant.
But the Cold War is over, Reagan is long gone and without that lost density to hold them in orbit, the planets are ready to spin out on their own into uncharted space.
