How to Get to the Sun Station
There are two Ways to get to the Sun Station. The first and obvious one that comes to mind is, to just land on the Platform. It not easy and it will take you some tries but its possible (Also you get the Hotshot Achievements for doing that).
But there is also a “official” way: Teleportation. Find the High Energy Lab on Ash Twin – the Solution is there. Also if you are wondering why the Teleporter won’t work: A hint is in the White Hole Station.