If you have the 2 from the small crystal planet, (A blue and purple one. They take some time to fins in their piles.) take them to the acid like planet with the glowing light. Do the same for the vort planet. Kill them first, then take it. Take them over there to that planet and place them in the white orb-is light with a physgun.
trust me, just found this out in uner 15 minutes.