Mindful contemplation of yours. I envisage the types of spaceships I am referring to in my post as being far more sophisticated than any ideas we can conceive at this time. Definitely not comparable with a human-made rocket astronauts use to fly to the moon. To me that would be much more of a "adventure" in its sense because the awareness that the technology behind that rocket taps the full potential of human developmental capacity would entail some uncomfortability and fear of the unknown. In terms of bringing phytoculture onto the spaceship it would be similar to cultivating a plant terrarium at home but with the potential of greater size capacity and therefore possible walkability.