"Oh yeah!" Tommy replied, looking round with a smile now. "They're fascinating! Although they don't tell the future. That's Astrology you're thinking of. I study Astronomy. Planets and their moons, comets, stars forming and dying and all the parts in-between, galaxies and black holes, all sorts of things."
They left the trees behind as he talked, and the park became much more maintained-looking. The "sky" faded out as they walked closer to Tommy's viewing area, and soon enough the stars were visible in their millions. The slow rotation of the wheel meant that a thin arc of the planet below them still remained in view, and Tommy turned to face Rob. "This is a city amongst the stars. This has to be a shock, and I'm sorry, but you're nowhere near Sherwood. You're nowhere near Earth. Everyone here has been brought here. There aren't that many of us, nowhere near enough to fill the city, but nobody here has done anything to bring you here, and we don't know how to get anyone home yet. I'm sorry, Rob."