Seeing as there is great risk of falling off of a space station I thought it may be useful and possibly simple to make a tether or safety harness. It could work in much the same way as a vanilla lead for mobs but you would attach one end to yourself and the other to a rail (edit: like a hand rail, not minecart rail) or other designated attachment point. Of course you could sneak to prevent yourself from walking off the edge of a block, but this is a passive secondary safety feature in case your finger slips or you simply space out and let go. If you fall over the edge you would only fall a specified number of blocks (I figure 3 or 4) and would simply need to press W or SPACE to climb back up. When traversing the station you would need to detach the tether and reattach it to the next nearest rail/anchor due to its limited range.