system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Wars] How high off the ground is Cloud City?

And what does the ground look like on that planet? Or what kind of planet is it? It must have vegetation and trees since the atmosphere is fine enough for Luke to breathe way up there.
gpt
Bespin, the planet that Cloud City flies above, is a gas giant.  Unlike our Solar System's two gas giants, Jupiter and Saturn, which are primarily composed of hydrogen and helium, Bespin is said to be primarily composed of oxygen and Tibanna gas (which is why Cloud City exists; it's a Tibanna mining colony).  Using Jupiter and Saturn as a basis, Bespin is likely composed of an outer layer of oxygen and gaseous Tibanna surrounding another layer of liquid Tibanna, which itself surrounds a rocky core.  Either way, the planet itself isn't inhabitable due to a lack of a solid surface.  Cloud City itself is explicitly stated to hover 59,000 kilometers/36,660.9 miles above Bespin's core.