So I was casually playing the game on Twelfth Dimension: Exploration and the gravity from the planet on the other side of this barrier tried to pull me towards it, but I hadn't activated the switch yet so this was the result:
I don't know why that planet's gravity has such a long range, but it all ended up like that. All I had to do to get off was jump off and I could only walk so far left or right before I got pulled back to the planet on the right.