Beam me up Scotty !! That's what this reminds me of, a futuristic space travel apparatus. ( And I didn't need a dictionary...hah ). Love that cool gradient & the light effect too, I know you're looking for critiques in order to make your work better, but I'm afraid I can't do it for you this time.
This is so easy to get lost in... Every time I look at this my eyes go out of focus... And then when I try to focus them back, I get the illusion that I'm in planetary space looking at a horizon of some planet and the space around it has crystallized and is refracting the light from its star... Wow. That's some cool Apo work!