They never really specify beyond the planets themselves being consumed wholesale. Some of the structures are just hollow spheres: https://preview.redd.it/7tvkbj

They never really specify beyond the planets themselves being consumed wholesale. Some of the structures are just hollow spheres: https://preview.redd.it/7tvkbj5bp2hb1.jpg?width=1951&format=pjpg&auto=webp&s=bd021469b4a948f084851197f7e1e342dd95caef https://preview.redd.it/7tvkbj5bp2hb1.jpg?width=1951&format=... Also conceivable that meteors etc crash into the megastructure providing it with endless resources.