I think about space a lot, Space is the boundless three-dimensional extent in which objects and events 
Yeah I'm pretty fascinated by space too. There's so much that we don't know. I don't think I will ever get to go in my life time. 
I have heard  Physical space is often conceived in three linear dimensions, 
I have heard the same for the most part. Aren't things like black holes an exception or do we just not know enough?
Space
Space is the boundless three-dimensional extent in which objects and events have relative position and direction. Physical space is often conceived in three linear dimensions, although modern physicists usually consider it, with time, to be part of a boundless four-dimensional continuum known as spacetime. The concept of space is considered to be of fundamental importance to an understanding of the physical universe. However, disagreement continues between philosophers over whether it is itself an entity, a relationship between entities, or part of a conceptual framework.
attempt making the film, Gilliam said, "Oh, I don't know, pigheadedness, stupid – I really don't know anymore. I'm beginning to actually think, 'If it doesn't work this time, I'm gonna dump it.' I've wasted far too much of my life doing it. If you're going to do Quixote, you have to become as mad as Quixote. [...] I've wasted how many years? Fifteen? Yeah, there's a certain point.